So a guy you like only wants to dirty talk w you? Have you told him it bugs you that he doesn’t want to talk to you about anything but sex?
Sometimes it’s pretty easy to lose things in translation here in Tumblr, assuming that is what you mean by talking. He may think that you only talk to him to get off, assuming Tumblr is your means.
Personally, I always think just saying what is on your mind is the best way to deal with it. If he can’t handle your honesty, then he isn’t the guy you should be spending your time with, IMO.