Udog's the man! Listen to him! Seriously though, I have very much observed this business of not enough expression of interest or being apprised of the raging passionate depths of his love. It comes off as someone just really wanting a girlfriend, but not specifically wanting me. I think too that because many INFP men are shy, and are also romantics, they tend to worry about being too aggressive (which they rarely are) or else they don't see the connection between developing skills with other people (eg starting conversations, getting to know someone well) that the target of romantic interest. They fail to see that when you have some practice in developing many kinds of connections and overcoming shyness, then when you meet the girl of your dreams you are much more likely to be successful! Confidence is very attractive!