Let's phrase it another way...... a lot of men conceal they are married. The woman has to actively find out.
When I do...on principle they get a cold shoulder like a glacier from me....regardless of whether the interest is romantic.
I know I can be a B@tch in a very subtle way.
You set out to deceive and deny the existence of supposedly your life partner and kids....there isn't even a basis for even a casual friendship in my opinion.