You shouldn't leave your spouse for someone you barely know.
Jess was in a relationship with Joe, but had recently taken a liking to Bill.
Jess wants see what her future holds with Bill.
Jess stays friends with Bill and does not peruse anything romantic.
Jess decides to break things off with Bill to see what will happen.
Jess stays with Joe and does not end up leaving him.
Joe is heartbroken by break up.