Yet Again

Things have been amazing with my best guy friend/I don't know what to call him.  We've been hanging out a lot.  He's been super sweet and even sort of protective.  Last week I met his cousin, then he went with me and one of my friends for drinks.  Yesterday I met another one of his cousins.  It's been great.  Then today he calls and tells me we need some time apart because he has commitment issues and can't be my boyfriend.  Those were his actual words.  I was like what?!?  I told him I hadn't asked him for anything and that I didn't have expectations.  He said I'm a great friend and he didn't want to hold me back from something I deserve.  I explained that I'm perfectly content with how things are.  I reminded him that my life is a complete mess right now and that I don't have room for a boyfriend really.  He was just kind of silent, so I said he should call me when he is ready to hang out again.  Then I hung up the phone and naturally burst into tears.  Why is it that when things are going great, something bad always happens?  I feel like an idiot for getting my hopes up and feeling happy about something.  The worst part is that he really is one of my best friends.  I spend more time with him than anyone and we talk about everything.  I wish he didn't over think everything and start freaking out.  Why do guys think we want to marry them tomorrow?  Seriously, I know that I want a family in the future, but the thought of marriage right now scares me to death.  I have no job and I'm not sure where I'll be living in the future.  I have a freaking brain disease.  My life is so uncertain.  I'm not in a place where I'm really dependable.  I wouldn't make a good wife right now.  I need more time.  I just want what we have to stay the same.  I just want what we have.