herpes simplex
"Got a cold sore at the worst possible time.. Met a chick.. Cute chick.. Everything was perfect...really like her.. (who knows I might marry her). Anyway, after our first date I started getting a fever blister. She wanted me to come to her place the next day....Of course I couldn't do so...Checked into how to remove the blisters,  found some Abreva and paid $20.. reluctantly for a small tube. Used it for 2 days.. using it almost every 2 hours. On the 3rd day its totally gone. No Blister at all. Could have lost the lady of my dreams. Woohoo Thanks Abreva."