It's wrong to blow off someone's special event.
Bobby realizes that his best friend Blake's bachelor party falls on the same date as a date with a woman he likes.
Bobby wants to have a fun night.
Bobby chooses to reschedule his date and attends Blake's bachelor party, having a fun night with the boys.
Bobby ignores his friend's bachelor party and decides to go on the date with his woman friend to have a fun night with her.
Bobby and Blake continue to be friends for years.
Blake is offended by Bobby's absence and their friendship deteriorates over time.