Where do I draw the line?

Okay so I'm currently a sophomore in college and last year I began non exclusively hooking up with this older boy. I was definitely (and still am) more invested in it emotionally than he was which was kinda scary. But long before I had ever hooked up with him I made the terrible choice of hooking up with one my really good guy friends, that also happens to be one of his teammates (who now is also his roommate). So fast forward.. at the end of last year I really liked this boy and unintentionally made it known but blurring out that I didn't like the way he was treating me because it made me feel solely like his 24/7 booty call, to this he simply responded "I don't know what you're trying to say but I don't want a relationship and it sounds like you do so I think we should stop fucking". this of course sent me over the edge and I cried hysterically for days lucky for me the semester was ending in 2 weeks so I wouldn't have to be ashamed of seeing in around my schools tiny campus any longer. Flash forward to this year, one night we both went out to the same bar and left together, he came to my room we had sex and he as per usual leaves because he refuses to spend the night in my room. A few weeks later, his roommate (the good friend of mine who I hooked up with last year) calls me and asks if I want to meet them both at the beach, of course Im super excited and say yes. So after a long day at the beach with my girl friends and these two boys we all return back to campus where a few hours later I receive a text from the boy asking if I wanted to come over, and of course dumb ass me says yes. Once again we have sex and before he could ask me to leave I made my exit so that I didn't have to face the humiliation of  being "kicked out" of his room. A few weeks after this is when things started to go down hill. Remember this kids roommate? Well apparently he remembered my bedroom manner pretty well because one night at the bar me and all my friends go to religiously I was extremely intoxicated and this kids roommate thought it was the perfect opportunity to go in for the kill. My roommate saw that we were leaving together and of course wasn't having any part of it so she requested that he get me back to my room and put me to bed and then leave. He then offered to bring me back to his room so I could spend the night in his roommates bed. My roommate saw nothing wrong with either option because the kid said he was going to his girlfriends room for the night anyways. And of course once we get back to campus, everything changed. My roommate walked in on us having sex and freaked out (which is totally appropriate) she threatened that if the boy didn't leave before she returned to the room in 5 minutes that she was calling security. Once she got back he was gone and I was asleep. I woke up and remembered nothing but had a bad feeling that we had hooked up. I was humiliated. I didn't want the boy I liked to find out that I had sex with his roommate so I tried to cut his roommate who used to be a good friend of mine out of my life. So a few weeks go by and of course here comes a text from the boy I like asking me to come over, I'm still nervous that he found out about what happened but anyways I decide to go over there. Of course once I get there we talk alittle bit but quickly start having sex and not even 10 minutes later I hear the door unlock and in walks his roommate. I wanted to crawl into a ball and die. Because of how dark it was in the room, his roommate at first didn't recognize that it was me naked in bed. Without even realizing I let out a very uncomfortable and painful "oh my god this cannot be happening" and instantly his roommate puts two and two together and begins to verbalize how shocked he was. "Awe Mike I didn't realize that was Meaghan, I thought It was that girl Britney you've been fucking". I thought it couldn't get worse than hearing that the boy I've been obsessed with for a year is having sex with multiple other girls but I soon learned other wise that this was just the beginning of the poking and prodding at my sex life. While I'm still in bed naked with Mike his roommate continues the rant  by bringing up my dirty laundry(Mike knows about me and his roommate having sex last year but has no idea anything happened this year) by asking me "who I thought was better in bed" "who had a bigger dick" and "if he could join in" in his head it was all a joke but in mine it was equivalent to being naked infront of you're entire stupid body. He didn't stop there tho; I have my nipples pierced recently and the only way you would ever know that is if you are in the same room as me while I'm changing or if we have had sex. No one else would have seen them ever. So of course his roommate decides to hint at Matt that we had hooked up recently by saying "hey mike what do you think of her new nipple rings?" To which mike responds by looking at me and then looking at him and saying "how do you know about that". This is when I wanted to actually melt into a puddle and evaporate. I had to make up a lie and say that my boobs were out in a friend of mines snapchat story and he just have seen it there and of course the roommate didn't like that and goes "mmhhmm that's where I saw them". Finally he decided to stop his attacks and go to sleep which me and mike did as well. In the morning I left for class and tried to forget about it all. At around 11 am I get a text from mikes roommate saying"hey sorry to ruin your fun last night didn't mean to" I obviously do not respond because I've had enough. Last that day I get another text but this time it was in a groupchat. The groupchat consisted of me, mike, his roommate, and one of their teammates nick.  Mikes roommate sent a picture collage that consisted of pictures of me and mike with hearts around it. I didn't answer and neither did mike. Nick sent some emojis in responce but other than that it had been ignored. A few days later Mike invites me over and I agree but only on the terms that his roommate will absolutely not be there. He agrees so I go to his room. We start having sex and he only lasts about 3 minutes before he finishes inside of me. He was embarrassed and I was unsure of how to handle the situation because that has never happened before. I was kinda pissed because I had only been in his room for about 10 minutes and I had a feeling he was going to attempt to kick me out. I knew my roommates were going to ask why I had returned so quickly so I decided to just put my clothes back on and attempt to hang out for as long as possible. 5 minutes later he tries to subtly break it to me that he's "really tired and needs to go to bed" so i of course sarcastically say "ohhh yeah that sounds like a fabulous idea". On my way out he says to me "don't tell your friends that I'm a 'two pump chump'" and because I was so pissed at this point I just look him in the eyes and go "you'll be lucky if that's all I tell them" and I walk out. As I'm walking from his floor up one flight of stairs to my floor I recieve a text from his roommate that says "Two pump chump". I seriously don't know what the hell to do. I still really like the boy but his roommate is interfeering at every chance he gets. All my friends hate mike now because of all of this and also have a strong feeling that Mikes roommate is doing this to me because he has feelings for me. I have no feelings for mikes roommate and honestly just want this harassment and ridicule to stop.