Was this a good relationship or did I ignore the red flags?

(Sorry it's a lot to read but it's worth it)

So I'm (15) and I had a boyfriend (18) but recently Thursday we broke up. We were dating for almost a year and we were dating before he turned 18 so the Cinderella law said we could be together. During our entire relationship the beginning was amazing but 4 months in we broke up because I had a lot going on than started talking to get back together after 2 weeks. We started talking again bc I went to his football game and I seen him and all my feeling came back so I wanted to talk to him after the game to say sorry on how our break up went down but when I went to talk to him he completely walked right past me like I wasn't there so I texted him and asked if we could talk. We ended up talking and saying we wanted to get back together so we tried getting back together and we were on and off for about a month until we actually got back together. The reason we took so long to get back together was because his bestfriend (she is a girl) kept trying to get in between us bc she liked him. All during this time period I went to every single football game that was home to cheer him on since his family went to nothing for him I was the only person there for him even the times we weren't together. After we got together officially everything was good until about a month ago. So he also does indoor track and the meets are about 2 hours away from where I live so the only way for me to go to them was to be a manager of the team. I gave my weekends up and my fridays just so I could go support him at his meets bc his family wasnt there. Well lately we have been arguing a lot. Mostly about dumb things but some times we would get into really bad arguments. Thursday we broke up because we got into another argument about something so dumb so I told him I was tired of arguing and I broke up with him. After that I started texting him again about 2 hours later bc I honestly love this boy and I didnt want some stupid argument end our relationship well he didnt feel the same way so for the past 2 days we have been texting about like what's happening between us and than yesterday he came over my house to get his stuff and we had a 2 hour long conversation about everything we needed to fix in the relationship than at the end of the conversation he said something about just being friends for now so I said "I'm trying to fight for our relationship and all u wanna do is be friends what's the point of me even standing here rn" than I walk away and he drives away. I texted him when he left that we cant be friends and than we started talking again about getting back together and last night i get a message saying "Yeah I don't think this gonna work rn bc I just don't want to hurt u anymore I'm rlly sorry." I've cried abouti all night but than I noticed in this relationship this boy did nothing but lie to me about all these girls he was texting, he would constantly flirt with other girls right in front of me and I would say something to him about it and he just wouldn't listen to me and continue to do it I think it finally stopped when someone else noticed it and said something about it to him like u have a girlfriend that's not right to flirt with other girls. He was always doing shady stuff that made me not trust him, and I never meet his mom in the almost year of us dating and i only met his dad once. Honestly i feel like i got played bc i cared about this boy so much and all he did was lie to me and prioritize other things over me he didnt show me the effort I showed him he never put the time in he said that me having anger issues was annoying. But at the end of all of this I still love this boy with my heart even tho he cant say the same, he actually had money to his name and even me not having anything everytime I got the smallest amount of money I used it to buy him something but he never did that to me. What did I lose someone who didnt care about me and was probably just using me for sex bc he tried that a couple times but I would say no but he did eventually get nudes out of me bc I was tired of saying no but what did he lose a girl that cared about him so much she was there for him and no one else was she would drop whatever she was doing to help him and she never lied to him about boys. I still love this boy though after everything he did the hell he put me through I still love him.