please no hate. just want advice.

okay so I broke up with my boyfriend and we've been dating a year or so. so about a few days after his bestfriend invited me to a party with him and I ended up staying the night with him and we hooked up...and my friends are calling me a hoe for it. I didn't mean for it to happen it was just like in the moment....but my ex found out and he's so pissed and told me that he wished we never dated. and honestly it didn't even hurt my feelings. like when I broke up with him I actually felt happier. but like since my friends say I'm a hoe..am I a hoe.  I really didn't know I was going to hook up with him..