system
A chat on subreddit /r/NoStupidQuestions
human
Personally I wouldn’t date someone who’s dated a lot within our friend group. Not all relationships end in good terms so is sexing someone up really worth potentially losing friends? 
Then if it ends and you start dating someone else that person will be subjected to that previous bed partner on a reoccurring basis.

For me, it’s a huge red flag that she’s dated and had sex with so many close individuals….but that’s just me.
gpt
Oh yeah that’s another thing that would make me a bit uneasy. I would feel like I was just another stop on this girls tour of the friend group. Plus it’d be weird knowing all of my friends have had sex with the same person. Just would be a weird dynamic.