How can I get his Mom to like me?

I found out why this guy left me. He had an x that was around my age but is a year older. I’m 15 and he’s 19. His mom doesn’t like the fact that he was with me. She even said to him not to date me and not to have sex with me. Well a few days after he told me this we broke up. He was moving about an hour away because his mother didn’t like the guy she just divorced. Alex’s x-stepdad was like a real father to him so he and Bill were okay. His mom pulled him out of this town, made him get a job that basically cuts of his social life, made him leave his friends, and I think broke us up. I don’t know. There was always a feeling of tension in the air when she was around. It’s like she didn’t want me there… I could tell it by the look in her eyes. What the hell? I understand her wanting to protect him but who will protect him once she’s gone? He can’t be bound to live with her forever. If you ask me it seems kind of sick in a way. He says he hates it down there and had to move because his xgf was a money hungry biotch(he wanted to stay but courtney cheated on him). I understand that. She is a bit promiscuous too. I think it may be because she thought I would pull the same sh*t that his x did to him, cheat on him and rob him of everything. I am upset because I love him and he actually still has feelings for me. I am also upset from being accused of these things. You may say not to conclude this but it makes sense. It’s hard to explain how I know. There was always a negative feeling towards me from her and she tried to hide it but I know better. Also the fact that most adults think that a girl my age can’t handle a real passionate and love centered relationship. Well some girls are a lot more mature than people think. I am completely monogamous(dating one person) when it comes to relationships and I’m loyal, trust-worthy, and such. I am not a bad person. The fact that he is miserable because shis mom didn’t like her x-husband(who btw is an okay guy) greatly upsets me. I can’t talk to his mom because when I try they never pick up the phone. I still talk to Alex on myspace but since work it’s not that much. Did I mention that she rubbed in my face that he took some girl to a concert the last time I talked to her(because the girls mom needed her daughter to be taken to a concert…a babysitter). She was looking at me the whole time with a smug smile on her face. He makes fun of the people that live there too. He calls them all retarded and stuff… it’s hilarious. What should I do with so little contact… I can’t drive yet but in about 6 months I can. But what should I do about this? I’m afraid to bring it up to him because I don’t want him mad at me.