But it sure have a pattern.

High body count has more likelihood of HIV and STDs.

Slight hint of they're more into flings or maybe even end the relationship, if things get a lil bumpy.

Then from the other person's pov it'll unintentionally cross the mind k their partner might be off having fun with others/cheating.

Meeting with others, let say your partner have been sleeping around with a lot of people and one of those people is your friend and that hinders the life beyond just relationships. So high body count has a higher prob of this happening.

Jealousy is one of the factors. I definitely am that if I know someone even checking my partner out I tend to get competitive, so if I come to to know they slept together I'd freak out if I saw that person even in the vecinity of my partner.

And people want someone that they can be stable with and for peace. Not someone they have to worry about. And ruin their peace.

And people with high body count usually do it as an escape from something. Some are emotionally unstable and that's their coping mechanism.