Hooking up with the Same Guy

background (if you just want the problem it’ll start with “SO”):

okay so i’ve always had really bad luck with relationships of any level romantically, and i actually prefer real relationships to just hooking up but bc a lot of guys i find myself interested in don’t feel the same way i’ve stuck to hooking up for the most part. ANYWAY there’s this guy and he’s sweet and funny and nice and we’re both super into music and we started talking a couple weeks ago and hanging out some (we go to a boarding school) and going on walks and just having conversations and working on music things as well as hooking up and it was great bc finally i was with a guy that wasn’t only there for the physical part of it. everything was great, i was finally feeling happy and less depressed (and yes i know that’s an actual condition and i’m not just using it to sound dramatic, i have minor depression). i knew we weren’t explicitly only with each other and i assumed he was probably talking to someone else, maybe even hooking up with her and honestly my jealous self was okay with that bc he was so great with me. so i was talking to one of my really good friend bc i was staying in her room that night and she was asking if i was interested in anyone or if i was getting with anyone (we’d been keeping it pretty lowkey and i’d only told two people about it) and finally i told her who it was and she was surprised as i expected her to be (bc all three of us are in the same acapella group and i don’t think she expected it) and she asked questions about it and i confessed i actually did really like him a lot and i was finally feeling happy and that i had actually been with him that night etc etc etc so fastforward to the next evening (today) she texts me and tells me to call her. so i facetime her and i’m kinda concerned bc it sounded urgent the way she phrased her text. SO she picks up and tells me that the guy is hooking up with someone else too. I was a little sad but not much because i kind of expected it so i causally asked if she knew who it was or not and she said she did and then paused and then said “it’s me”. it felt like a bad dream i didn’t really know what was happening it didn’t feel real big i felt my heart drop. i tried to act unfazed as she went on to explain that she had hooked up with him for the first time THAT NIGHT. after having been with me he got with her. that hurt a lot. anyway i could go into more details but basically we don’t know what to do bc he’s not necessarily a bad guy bc we weren’t in a closed relationship or anything itsjust that now we sont know what to do bc we both like him a lot at least i really really like him and we need a solution fast so please please please help a girl out