I 19f have a bf 22m We’ve been together for 9 years (ik we’re so young and happy) we weren’t each others first or anything and we were off and on for a good 4 years but always came back to each other

Now I know I probably sound controlling but please just stick with me my boyfriend is on his game 24/7 and plays with anyone he can to make money and such and I’ve never had a problem with it I didn’t care if he was playing with a male or female who cares it’s just a game yk until one day he was playing with this girl and he was texting her back quickly like very quickly but I didn’t think much of that but when I started reading them she was clearly flirting with my boyfriend saying things like “oops ig that’s why I shouldn’t shoot and text mb;)” and “sorry I’m no help your truly carrying us thank god for you” when she was level 98. I started to get a little worried in my head but didn’t wanna make my boyfriend just quit the mission so I decided to go take a shower if I can’t see the messages I can’t be mad yk I take my usual hour and a half shower and just watch TikTok and relax. When I come out my bf is still on the game I ask if she’s still playing with him and he said “no she said she has to work and had to get off” and I felt a wave of relief she sent him a friend request and I asked him not to add her back and he said “ok babe I won’t add her back and won’t play with her again if you don’t want me to” he was a little annoyed that I was upset but not bad or anything a day goes by of just normal stuff and we go to sleep when I wake up I have a gut wrenching feeling I need to look at his phone so I do and I went on his Snapchat first he only has a couple people on there so I wasn’t to worried his list looked normal but when I clicked his snap search bar I saw a girl added but her chat was deleted off the list and her notifications were muted I immediately click on her to find out she’s the girl from the game I look more on his phone and find that he downloaded the Xbox app and asked her to so she could text him while she’s at work I woke up him mad asf asking him why tf she was on his Snapchat let alone why is he still talking to her and why does he want her to talk to him while she’s at work he completely lied to me saying the girl on Snapchat wasn’t her and that he was just trying to be nice and have a friend to play with and I said why the one girl I’ve ever asked you not to play with he just kept saying it’s not the same girl (it was) I blocked her off his phone and as of 2 weeks later I haven’t seen her back nor any other girls but I’m still upset about it I’m upset he’s still lying to me saying (the girl on Snapchat wasn’t the same girl) she was. But other than that he’s been reassuring me he loves me and would never leave me especially for some girl on the Xbox and that we have a family and I’m being stupid. Am I? It just hurt I asked him not to play with her again and instead he asks her to get an app so they can text off the Xbox and adds her on snap and muted her notifications and cleared her off his list it just feels wrong to me why would he go through all those steps what would have happened if I didn’t find her would they still be talking I’m just really fucked up in the head about it I don’t know what to do and I need advice anytime I bring it up now he gets mad at me and says I’m always in my head and it’s annoying him but I just wish he would see it from my point of view. Please give me your best advice and I’m sorry if this kinda makes no sense we just got in a little argument about it and I went upstairs and cried smoked and now I’m writing this so if it doesn’t make the best sense I’m sorry bc I’m definitely not proof reading it I feel sick just writing it