Advice please

This kid that I got with let’s call him rob, is telling people I’m his worst hu(making out etc. not sex) it happened February and to this day he still talks about it. What should I do? I was hanging out with his best friend yesterday who I have a crush on and he was FaceTiming rob but as soon as I was put on the screen he said “fuck no I’m out” and left the call so that was already more embarrassing for me. I already know rob had to have told his best friend (the one I have a crush on) so I’m kinda experiencing my dignity starting to cripple. To be fair I thought rob was the worst hu I’ve had. Way too much tongue, and way too fast; there was no pace whatsoever so I was confused trying to follow his lead but I’m pretty nice and care about people’s feelings so whenever someone would ask how he was I would always say good bc I know that people don’t always have chemistry and with me I might’ve thought he was awful just because we didn’t click but someone else could think he’s great.