I sound stupid but don't care lol

Okay so I've had sex plenty of times before but the thing is they've all been with the same guy...
We were together ages and I thought he was the one. I've moved on and want to be open to having sex again but idk why but I'm so scared to have sex with someone new!! All of my friends say I'm being silly and it's no big deal but I just need some advice. It feels like loosing my virginity all over again, Help!!!