Hooked up with a guy who turned out to be married

I feel like a moron.
He led me on.
He told me he was single.
In hindsight I could have known he was lieing because he was very handsome. Too handsome to be single.
I hoped that he was one of the good guys who was not lieing though.

So we went for dinner, had a few drinks and had sex.
Found out through a mutual friend that he was not single.

Feel played.
Feel used.
Thought I found a good one.

Messaged him that I knew he is a cheater.
Got a stupid silly story that he said he is single because he is in a unhappy marriage and soon to divorce and yadda yadda.
Probably even more lies.

I will probably not be seeing him anymore.
Relationships are built on trust, not lies.