Not sure if it quite counts, but there was a Turkish Novela dubbed in Spanish where the villain marries the MC's love interest and takes in MC'S daughter.
But then the villain ends up getting attached and becomes a better parent to his step-daughter than her biological parents.
He'll put her to sleep, sings to her and when everyone is arguing, he'll point out that they shouldn't be fighting in front of the baby.
There was even a scene where the mother threatens to take her away and the villain points out that he's the one who puts her to bed and feeds her and asks the mother if she even knows at what temperature the baby should have her milk at.
It was kinda funny. Don't get me wrong, the guy was diabolical but you know he wasn't going to forget snack time.