not herpes, red spots around vaginal opening

i’ll get straight and to the point.

a few months ago, i had unprotected sex with my ex boyfriend. a few weeks later i got smooth red spots around my vaginal opening. they do no telling itch, hurt, burn when i pee, or have anything suspicious. my vaginal discharge is normal with no funky oder.

however, about 2-3 weeks ago i had sex and this guy said he experienced red bumps on the head of his penis. it didn’t sting when he peed, or itched and there was no discharge from his penis. what could this be?!