Can somebody give me getting over him advice?

How do I get over a guy I've liked for 7 years who doesn't know what he wants? I keep making up my mind I need to move on- but he keeps flirting with me and saying forward things to me infront of my friends- he won't let me go. I'm the only girl that likes him- and I really like him- but I just want to move on because I've always been there for him and been good to him and he takes me for granted and he's done some very jerky things to me in the past.