This book I got when I was a bit younger and coming out, but Promises by Marie Sexton, part of The Coda Series, is a pretty good one about a police officer (who I think fits the bro character in this case) who comes to town and falls in love with the main character. I've only read this and the 4th book, Strawberries for Dessert, so I can't vouch for the entire series. Also, Strawberries doesn't have a bro character necessarily, but it's pretty good.