A couple of things my Dad told me;
No matter how busy a man is, if he really wants to see you, he will make time for you. No excuses, lies, or broken promises.
He won’t push for sex early on.
He will remember your interests and act on them.
Mutual appreciation is an important ingredient in the glue that holds a relationship together. It’s not only about the big things, either. A man who would make a good long term partner should show appreciation for even the small things you do.
Take your time too...see him a couple of times a week and let things develop slowly, look at his relationships with family / friends etc.
I'm always keen to know about relationship history too - I think that's really telling. I dated someone once who when talking about ex girlfriends, always put the "blame" on them!
Most importantly, relax and enjoy yourself, we all deserve to smile a little.
Best of luck.