Friends with benefits

So about 7 months ago I had a bad break up with a disrespectful piece of crap and shortly after that I had sex with my friend. It was a surprise to me that it happened. Me and my friend had sex two more times after that so we decided to become fwb. I wanna know has anyone had this arrangement before and how has it worked out? Did y’all stay friends after it was over? Did one of you end up getting feelings and if you did how did that turn out? Did one of you get jealous when the other started dating?