he wants two lives, he wants to fuck his piggy slut and he wants his kids to look up to him
my perspective, don't help him pump sunshine up his kids ....
your children's long term mental welfare cannot be built on falsehoods
their father is a deceitful selfish turd
you shouldn't point that out to them (i know they are young, even if older you shouldn't point that out to them)
but don't lie for their daddy about their daddy to them

I’ve tried to set boundaries but he still keeps on wanting to break them. I just don’t know what else to do. I’ve set my foot down and he doesn’t seem to care about it.

The thing is he has absolutely no control of you. Please understand that there may be feelings of weakness but you are in control. He does not have to care about your foot being down. It sounds like he feels bad and does the bare minimum to make himself feel a little better. I too have gone thru something very similar. I was hospitalized due to problems with pregnancy for 2 months and my husband chose to not visit me and cheat while I was dealing with issues.

I cried a lot. However, remaining strong for myself and now 6 year old was not an option. Strength is not optional. Your husband has abandoned you and his actions are selfish. You now must protect yourself and your children. Allow for him to take the children without you. Do not allow him in your personal space while you are vulnerable and remember it is ok to cry. This pain is extremely hurtful. My prayers and thoughts are with you. Remember you will overcome.

Refurb is right. Your H wants two lives. He has two lives and he will as long as you allow it.

You need to see a lawyer immediately and do not tell your H. Find out what your rights are, how much alimony and child support you are entitled to, etc.
Then divorce him.

Once you have a lawyer representing you, you can go no contact with him.
This is to protect you and your sanity and your children, too. When you have direct contact with him, he walks all over you. He has no respect. You do not need to tolerate this.

Just in case there is any doubt in your mind, your marriage is over. He ended it. Do not let him confuse you with dinner and text messages.

He has not said he is sorry because he isn't. So get going and call a lawyer.

I know this is painful. But you are not to blame. You did not make him cheat.
He wanted to and he had accessibility and availability. His slut made herself
available to him. But he would have cheated with someone else if it had not been her. It is a question of character.

Thank you all for your words and advise! I’m moving forward for my children and I. I have talked to an attorney but it all seems to favor him. I just need to think what I should do next. I don’t know

Thank you so much for your words! He asked me a few days ago where our relationship stands. I wanted to talk in person and he just kept on giving me the run around. Then he asks why was I taking him to court for child support and how much I wanted each month. He then said that he hasn’t made a final decision yet. I was left so concussed and with so much unanswered questions. I tried asking him the nature of his question but I didn’t get an answer. Any suggestions?

He is playing games to lowball you.

A lawyer will help ensure you don't get taken advantage of by your soon to be ex.