Relationship advice🤦🏼‍♀️ help please,.

So me and my boyfriend have been together 1 year on august 14th. We’ve recently been arguing a ton here lately. The thing about it is that we are perfectly fine when were together in person but when we’re texting we always find something to argue about. One day he asked me if some girl from our school had been sending me streaks because she had been sending him streaks for about 4 Days now so I told him yes and he was saying he was going to start a streak with her well I knew something was off and I get a horrible vibe from her. He started talking to her and her boyfriend of like 3 yrs had broken up so he was trying to talk to her about it. She starts going on about how the reason they broke up was because they didn’t have the opposite gender in the relationship to vent to and just stuff I didn’t and still don’t agree with..so he came to me and told me he thinks that’s a good idea and that he should have a girl best friend to vent to. I told him if he can’t vent to me then we need to be fixing things that he doesn’t need one necessarily. So we argue on and on about this and finally we get over it. Well we’ve had more arguments since then, so today like an hour ago he comes to me and tells me that we need to talk and that he feels so lonely when he’s not with me because he has nobody else to talk to. Mind you he’s been with his friends all day long and all week long I’ve only seen him 1 time since this week had started the rest with his friends which I’m fine with. So my best friends list on Snapchat is literally him and my girl best friend it’s nobody else on there that’s how many people I talk to. So he tells me that sometimes its good to have girls that are friends and that he misses his old friends which were literally all girls. So I told him if that is what is gonna make him less sad I guess I could work with it as long as the girl knows he had a gf and respects it, so then I tell him that he can start hanging out with his friends more and just see me less and get all his old friends back.. mind you I stay at home and I text nobody...and I’m lonely at time but I get over it...I just need advice on what to do. I’m confused and just need advice other then my 1 friend I do have. Anything helps❤️