Why am I hearing bad things from my boyfriend's friends?

I think it sounds like you need to talk to him when he gets home. When he’s home, ask him why his best friend and your friends would be telling you that. Ask him about it and see what he says. If all you two do when you’re together is hook up- and that seems like the reason why he invited you over, it’s a problem. It isn’t mature to be telling your girlfriend one thing, and your friends another. Make sure you get a straight answer out of him, and try to do things other than hook up when you’re together if it seems like he’s using you. Only time will tell what’s really happening, but I don’t think his friends and your friends would be telling you this for no reason. Don’t accuse your boyfriend of anything, but be careful.

If you love this boy and enjoy all the time that you spend together than do not deal with that what “friends” talk. Even do not be worry about that you love him more than he loves you. It is almost not possible to love each other exactly the same degree. Usually one of the couple loves always “more”. Even, this can be change by the time; so it is possible later this boy will love you “more”. The only thing you have be careful of is that never let anybody to torture you, I mean emotionally. As far as I undersood your situtation this boy does not want to torture you. So just take the advantage of that you are the “little sex toy” of that boy that you lovem, and you enjoy the sex with him.