Maid of honor [FM]

First post. It’s pretty long. Sorry. So bit of backstory, I’ll indicate below where the good stuff starts. My best friend in college was getting married. I (28M, 6’2″, 200ish lbs, played hockey all through school, not in as good shape as I used to be but still decent) had a huge thing for her in college but it never went anywhere and we’re just really good friends. Because I was so into her, I never paid attention to her friends at school. One of them, we’ll call her K, is honestly more my type than my friend. She’s about 5’4″, blonde, C cup, phenomenal shape. So K is maid of honor and last I heard had this super great boyfriend. She lives out of town and I haven’t seen her in a while. I’m just looking forward to the open bar honestly.

Everything is great, lovely ceremony, blah blah blah. I’m at the bar during the reception and it’s getting late. K walks up (the bridesmaid dresses were a great choice). Me, being a total dumbass, asked about this bf of hers. She hesitates and then matter of factly lays out how she caught her “super great” bf fucking some other chick in their apartment. We chat for a while, I make an offhand comment about how great the dress looks on her. She responds with a super smooth, it looks better on the floor.