He has to figure out what he wants and you are only going to be hurt in the process if he does one thing, and than goes back on it afterwards.
I don't know for sure, but it sounds like he is kind of keeping you around as an option until something else comes along. Friends are friends, and that doesn't sound like a friendship to you or me. For some people, like myself, I miss the intimacy and affection you have in a relationship and I'm sure he does too. He misses that and feels comfortable enough with you to do that.
There needs to be a frank and honest talk here. Let him know how you feel and no matter how he feels, he just has to say it. And if he doesn't know what he wants than you are going to have to leave him alone and remind him that he needs to be on his own to figure things out and you need to as well. And it's probably going to take some time ( a couple months for example) to really figure things out, because all too likely he will feel like you are gone to him and he's going to chase with desparation. And that's for the wrong reasons.
Waking up next to a beautiful girl,
Step outside and say hello to my beautiful world.