Anyone with someone just for their kids sake?

I’m curious if I’m the only one. Over the last four years I’ve suddenly realize my relationship is just for the kids. I’m kind of unhappy, there isn’t a lot of affection and I’m the type of person who likes to be showed I’m loved. We’ve both admitted we’re doing the best we can for the sake of our family. I recently finally admitted it to myself. Sometimes I want to start over be in a loving meaningful relationship. The thought of having to start over. Plus I’m pregnant with our second 19 weeks. So now is not the time. I’ve had hopes we would fall in love again. We do love each other just not in love. I don’t want to put my daughter and soon to be baby through it. But also happiness can be seen by the kids. I feel stuck.