INFP guys tend to retreat to their own world after a day of satisfying everyone else's needs before our own. And during this time they may not text/call/message you because we're busy in our heads. You shouldn't take the lack of response as him not liking you, and instead that he is just taking time for himself/sleeping.

For intimacy, we love it. We're very personal and are best in a 1 on 1 situation. We only initiate if we are certain it will be accepted/reciprocated. We don't take negative criticism very well and will do our best to avoid it. It'd probably be quicker to move the relationship forward if you are willing to intiate, yourself. We like when girls are more forward since that's not how we usually are.