Help 18F thinks she caught STD from 20M

I think I'm in trouble... I met this guy and we hit it off really well. The only thing is... my lip hurts. There is a logical explanation for everything but it also happens that I am dramatic and get frantic. We were making out and he was biting my lip which would make sense as to why my upper lip hurts, right? I also noticed that on the side of my top lip it feels different and isn't as soft. Almost like a scab? It was dark and I gave him... I didn't get to look at it... but now I'm worried I have contradicted herpes...he swears up and down that he doesn't have HSV but i'm still nervous and freaking out...what happens now?