What should I do:/

So there was this guy, we will call him Q we talked at the end of the school year and hung out a little into the first days of summer and we liked each other, his bestfriend, we will call him g, and I still talk a lot and I am really starting to fall for g because he always talks to me about anything I need to talk about because I have a lot in my life going on but there is another guy we will call him M, but M and I have known each other for over a year and have dated twice but I really like him too