Not sure how I feel

Found out a few months back that my boyfriend had been cheating on me for months so having felt stupid for long enough not figuring it out sooner I walked away with my baby dreams shattering my heart more than his betrayal, I’ve spent the last months learning to love myself again and consider getting back into the world of dating. After an emotional night I found myself sleeping with a friend and now I’m freaking out a little, because as much as I want to be a mum I always thought it would be with someone I love and was in a stable relationship with. I don’t need anyone to tell me how stupid or irresponsible I’ve been I’ve done that enough. I just need a little advice on how to tell my FWB’s he could possibly be becoming a daddy.