I'm going to sleep with a married friend.
Why do you want to sleep with your friend who is married?
Because we have had an emotional connection with each other for years.
I understand loving someone who you have known for a long time but it's wrong if they are married already. You should wait until a divorce or move on from each other.
It's not like they are going to work out, they already have so many problems.
You don't want to be the person that ends their relationship do you? It would be much nicer to let their marriage take it's natural course.