Two and a half years... that's not easy man. But, if we can look on the bright side for a second, it seems that you two separated on relatively good terms, which is better than plenty of ex-couples can claim. My advice; don't force anything. I know you may not want to, but you should try to take it easy and let her have her space. Chances are, after being with you for that long, she's got a lot of emotions to deal with as well. As you said, she's your best friend, and I imagine that relationship means a lot to both of you. I don't know if I'm the best guy to be giving relationship advice, but after seeing one of my best friends go through a rough breakup recently, I can tell you that trying to push matters along is one of the worst things to do. Granted, she... wasn't the best person for him in the first place... but the more he tried to get back together with her, the further apart they got. Mind you, I'm not saying you should ignore her completely, but take cues from her to figure out what she needs. And in a few months, if things seem to be getting better and you're both open to the possibility, maybe you can try again.