J, let me get this straight, you want to sleep with the girl who got the promotion to get her back for getting it in the first place even though you don't know for sure if she got it by sleeping with ur boss. You're just taking it upon yourself to assume she did, and you're also taking it upon yourself to pay her back for it 😑
Revenge like that is wrong, I don't care what she did.
If u do it, you're a hypocrite, because you're doing what she did, using sex to get what you want.
I thought you and your friend were competing for Amy.
Jugg, don't be a moronic moron moronator!!!!!
If the chick fancies u, don't u reckon she may just ENJOY sleeping with you? In which case, you are only giving her something else that she'd like. I don't think she would care if you f**ked her then left her, by the sounds of it she just enjoys sex, obviously it hasn't got much meaning to her if she slept with ur boss just for a job!!
And if she did sleep with your boss, who do you think the first person she'll go to with any complaints will be?? You got it, your boss. So u'll get in trouble, or fired, for messing her around!!
And last but not least, it sounds like this Amy chick can do a lot better than u, if u are willing to shag some bird just to get revenge, be a man and ignore the fact that this bee-hatch nicked ur job, and slagged around to do it, ur in a meaningful relationship, I reckon your slutty colleague doesn't have the faintest idea what that means. So, at the end of the day, you got the better end of the stick. And, when u do get promoted (as I've no doubt you will), it'll be on your merit, not coz you gave someone carnal favours!!!