Advice please & thank you! Read description.

Okay, so I've been in a relationship for about almost 8 months. We don't live together but my boyfriend is a bit controlling. He has his own life but i don't have mine. Even when i try to have my own life, he thinks he always has to be there. (When I'm with friends, etc.) He hated all my old friends and they didn't like him so they pretty much just stopped bothering with me. He would never want me being with them. He always does whatever he wants and i just let it be. He always knows I'm available which i know is a bad thing so we hang out on his time or when he wants to. I think he just excepts me to sit at home all the time and not have a life? How can i make things change? We're talking later but i don't know what all to say? Before i was with him i feel like i was happier. If things don't change i don't know if i can stay with someone controlling..