But let's say you find out your SO is having an affair behind your back.
Which would bother you more?
A) if the other person the same gender as you...or the opposite gender?
B) if the other person was better looking than you...or uglier?
C) if the other person was better endowed than you (bigger tits or penis)...or less endowed?
D) if the other person was smarter than you were...or stupider?
E) if the other person was more accomplished than you (better job, education, etc)...or less successful than you (like a cashier at McDonalds)
F) if the other person was a friend who had been really lonely lately...or a complete strange?
G) if sex with the other person was way better than sex with you...or they didn't really have much sex, but still your SO was spending a lot of time with him or her so maybe it was something more than just sex...