I'm gonna make this quick. I still love my ex boyfriend(who broke up with me when he still loved me and didnt tell me why) I know he still thinks about me but I dont know if he wants to get back 2gether. So, I wanna fool around with his best friend (he likes me and would have no prob). My question is: Should I?

My intention is to make my ex a bit jealous but mostly to see if he still likes me. But, after having fooled around with his best friend he won't want to get back 2gether, right? : Anyways, just help me!Please!!! I love him so much, I dont wanna lose him!!!!

Thanks.