This HaBO is from Obsessed Southern Mama, who hopes to track down this book:

So I read a book awhile back that had a single mom with an infant and some fake dating/forced proximity.

These are some other details but I’m not 100%. It was a sports (possibly hockey) romance where the heroine gets involved with her brother’s teammate/best friend.

Basically the scene I remember is she was at a farmers market (either with the hero or ran into him there) and an ex (not the baby’s dad) came up and was making her uncomfortable by telling her how well her body bounced back since the baby and how he would still do her or something. The hero acts like her boyfriend, which turns into a prolonged fake dating because he’s famous and word has gotten out. Obviously they end up together but idk what book it is and it’s driving me nuts!

Sound familiar to anyone?