I’m married with two daughters ages 5 and 2. Of the Wife and I were to break up, no man would enter my ex wife’s home while our daughters are there. That’s it.
We intentionally chose to bring these children into the world and will protect them at all costs. On the flip side, I wouldn’t intentionally date a woman with children.
I’m not on no blended family shyt. We entertain each other outside of our homes, maybe some phone and text conversations, and hotels if children are at home. It’s not that hard. If you are juggling 4-7 women it’s easy to get your needs met.
Now if you are seriously looking for a partner, I don’t know what to tell you.

I believe there’s a certain age where being step daddy is okay. 7 is probably the cut off. Even then, I would hope the father is in the child/children’s life.
Sex equals babies at the end of the day. It’s your job to protect your children. You don’t get to have fun and start another relationship exposing these children to new people. Make it work with your child’s parent or don’t bring any into the world.
Men protect your seed and women protect your egg.