Don't know what to think about this or do ..?

So theres this guy , i'll just call him Tom well anyways he's 21 and has a kid and i'm 15. He's not with his baby's mom anymore and he told me he wants to be with me. We just recently stopped talking cause it started problems with his baby'] mom and i don't want or need that , but i really miss Tom. And i fell in love with him. I told him i would and i didin't wanna get hurt but all he did was lie and hurt me.. The today his baby's mom text me and told me to watch my back and to leave him alone and stop talking to him but he's the one that keeps texting me and calling me and coming over to hang out.. I really want to keep him in my life but i don'tg want the drama or to be hurt. Plus Tom has also hurt me really bad mentally cause he says one thing and does another i'm sick of it but i don't want to let him go right out of my life. I really miss him alot :( .. And everytime i confront Tom and ask him if he lies to me , he lies right in my face :( i'm just so sick of being lied to and hurt..