I cheated on my old boyfriend with my new boyfriend.
I dumped my old boyfriend for my new boyfriend.
Then I cheated on my new boyfriend with my old boyfriend.
Sometimes I still contemplate leaving my new boyfriend for my old boyfriend.
I had something deep with my old boyfriend, but my new boyfriend is a much better boyfriend.
Sometimes I want to have them both at the same time.

I don't regret a thing, and would probably do it again if given the chance.