Should I wait?

I'm 19 years old and I've never had any sexual pleasure at all including pleasuring myself. I've been dumped by several boys as they don't wish to be with someone if they aren't getting anything out of it.. Recently I started seeing a guy and I really like him , I'm starting to think I'm ready to have some kind of contact but don't no if I should. I always wanted to try and wait for marriage. Should I just wait and deny myself even further and probably get dumped by the guy too:(???