You and him are childhood friends. You were once close, but when he got into a relationship and eventually got engaged, you took a step back from the friendship.

On his wedding, he gets left at the alter. He is sitting at the bar drinking away his sorrows, when you come up to console him. He invites you to his honeymoon suit for some drinks.

The more you drink, the more loose you both get and more honest with each other. This leads to a mutual confession which sparks up a flame and steers your night in a completely different direction than first intended.