Are You My Daddy by Bobby Hutchinson
This book was gifted to me. This story starts sort of amusing when Conrad suddenly becomes responsible for a child he was convinced wasn't his, and has never met. It turns tense but sweet as he gets to know Robert. And then gets very dramatic when Abby's sister gets involved. By the end of the books you just have to say "awwe, that's so romantic and sweet and heartwarming". It's a short story that packs a lot of story into it. A must add to your TBR list.