Girl code?? Would you do it. ?

Heres the sityation. So you have a best friend ( of the same sex) and they have an other best friend ( of oppisite sex). They kinda like the person but dont wanna get with them because they dont wanna complacate things. And you kinda like your best friends best friend and they like you a little too but your best friend made ut clear that you cant date them cause in the future it might happen. But ur friend is a player/ whore and gets with a lot of guys/girls would you get with him / her?