Does anyone know this book or a similar one?

The fmc gets pregnant and the mmc gets distant. He asks her "is the baby going to take you away from me?" And she tells him it's a different kind of love because he doesn't understand what's its like yo have a mother's love. I saw it on booktok and forgot to save it and now I can't find it anywhere.

If you know this book I would really appreciate the title and author. Or similar book recommendations, thank you!