Used to talk to this guy, I messed things up between us and now I miss him/want him back?

Awwh! Sounds like you went through alot to finally get to what you want. You need to get close to him again, dont take notice of the small things he does e.g. not texting back as they will just get too you, focus on getting closer :) Invite him out a couple of times again, but play it like your not totally into him to make him be thinking...is she into me? That way, he will get the feeling your getting with other guys at the same time and he will realise he wants YOU more and more. Then give in and tell him you like him again. Cant get anywhere with secrets! Good lucck