As the other posters said it will be a great idea to wait. And he won't let you wait a week if he is legitimately interested.

Freaking him out would be the following:

-pinning him down to find out what he wants right away without getting to know you first
-hassling him over text or email if you really get impatient
-discussing sex and being intimate with him before the next date (this may not freak him out but may make him think you're easy, I may be completely off with that but it's happened to me before)

The BEST thing you can do is not jump to fast. If he is shy he may want a friendship first. I think that's probably why he asks if you wanted to split the bill. He may just want to start off as friends first but may not necessarily mean he isn't interested. I do find it weird that he asked for you to pay for your half, but he could just be having money issues, hey times are hard!

I really liked what Seesaw said. I have noticed some of your posts primarily in meeting men online. Find something that YOU enjoy and makes YOU feel good. Men like a woman who has things going in her life other than meeting guys. Just food for thought.