Well... being quite a bit older than you and having dealt with similar situations, I'll tell you right now - you can wait for years and he might still not be ready. And trust me, it's not because of this or that - the hard truth is that men are very simple. If he wants you, he won't risk losing you. The problem is, you've made it known you're willing to wait which means he has all the time in the world to do what he wants and get back to you. Meanwhile you're twenties will have been spent longing after him, while he is out there, probably sowing his wild oats or whatever it's called. Don't wait for him.. I did... one of my lifes harshest lessons.