Need some advice..

My baby's father left us when I was just 13 weeks.. He has no interest in us.. Am I wrong for starting a relationship with someone else who loves my daughter as his own? I post anonymously because I feel ashamed and/or guilty for being with someone else while pregnant. I'm almost 39 weeks.

Edit: The person I'm with right now has been there even before my pregnancy I just never noticed him like that.