With my husband, being the type of person that I am, I did that early in our relationship and oh boy, he was absolutely offended by it. We're very open with each other and he told me it is NOT OK for me to do that. He was downright pissed! well ok I won't! I would however send him things like cookies or buy him flowers.
Being we were LDR at the time, he loved that. But buy him 'stuff', pay for dinner?? oh nooooo never that! He didn't even like that I would pay for my own plane tickets when I came to visit.
I didn't try to publicly pay for dinner again until we started living together, which was about 3 1/2 years into our relationship. In that particular case, he was OK with it.
We've been together for over 12 years now and yes
he LOVES it when I buy him stuff or take him out to dinner. I mean hell now we married and his money is my money anyway but yes it makes him feel special. Women and men are all going to be a bit unique in this area. But at the very least, keep your money in your pocket during the courting phase. there are other things you can do (like cards, flowers, etc) that can make your interest known...as long as he's also returning that sentiment!
-A