Rejection after disclosure! Feeling LOW! :(

Hi everyone. I recently disclosed to this guy that I like. I actually found out that I had herpes after sleeping with him. So I had to tell him on top of dealing with the news myself. It was a nerve racking experience but I was as open and honest as I could have been. Anyway, after telling him I didn't hear much from him. I seen him around work a few times and made some small talk (we work at the same place and socialise in the same circle... fabulous, I know). So I really wasn't sure where his head was at and I was planning on asking him until he slept with someone that I know... 5 days after sleeping with me! I feel like my honesty and self worth has been totally trampled on. I have been rejected by plenty of guys before (I have a lot of luck, haha) but this one really stings because I feel like it has to do with herpes as well as him not being that into me. I also found out that he started messaging this new girl (the one he slept with) the day after I told him. This hurts and I don't know what to do to move forward. What do I say to him? Will he feel any sense of guilt about what he has done? How shall I interact with him now? Any help would be much appreciated. Thanks!!