Jesus Christ there are some vile arseholes on this thread.
Do you just see the words “married man” and then go straight in for the kill?
There are so many situations in life where people say from the sidelines “I would do x/y immediately” but when it comes to the crunch people often act differently.
For anyone who says the OP doesn’t have real feelings for this man, never under-estimate an emotional connection which can be formed online, when what you have is conversation during the good times,a personality which has been formed in your mind and the belief that all you need to make it perfect is to meet in RL.
The OP didn’t know he was married. For anyone who says she must have known, there are people out there who are part of an actual double life, with children and everything, and who are oblivious.
And actually I’m wondering, if people find out they’re in a double life, who should be the one to end it if there are children in both those families?
OP I can actually see why you’re in a dilemma about this, because while it’s easy to say just block, I would want him to know that I know, and I would want to make my feelings for him over it abundantly clear. not least because I wouldn’t want him to think himself to be the poor innocent victim of ghosting.
So I would actually tell him. “You’re married, and she’s pregnant, and no, I don’t want to hear the line that “she doesn’t understand me” so don’t ever contact me again. “.
And then I would block.