Anna Bell,

Of course you did the right thing. This kind of thing never turns out well. This man caused heartbreak to you, himself, and his wife. He has basically wrecked his own life, because I am sure that his wife divorced him.
There is a Zen teaching that talks about "seeing the end in the beginning."
Many people see only what is right in front of them. They do not see the damage their actions will cause. Then, when the destruction happens, they whine and cry and say "I'm sorry," thinking that will wipe the slate clean.
B.S.
He knew what he was doing when he did it. Malice aforethought.
If any women read this, now you know why you are under such scrutiny.
We want to know as much about you as we can, to avoid this same thing happening to us.
A vow is not something you keep until you decide to do something else. A vow is a commitment accepted before God. It is meant to be eternal.
This man violated his vow to his wife and also betrayed your trust.
He is neither worthy of his wife, nor is he worthy of you.
Find someone worthy of you.

I am sorry this happened.
Take care.