Bye! Found new rich BF

A rich coworker Mike gave your GF Julie a ride in his Porsche car. He then invites her to a yacht party this weekend, w/ Julie begging you to let her attend. She hopes she can seduce Mike at the yacht party and upgrade herself to a rich BF. "Yes, yes, I know honey, I already had plans to go on a picnic w/ YOU on the day of MIKE'S yacht party. But it is a literal YACHT party, OMG! An opportunity of a lifetime! Can't you be happy for me babe?" Julie tries on different bikinis at her bedroom, secretly hoping she can get in some drunken sex with rich Mike at the yacht party and win his heart. Julie is tired of living a boring life with you in a tiny apartment and cheap furniture: she deserves to be pampered w/ expensive vacations and rides in expensive cars, things only rich Mike can provide her. The yacht party is your GF's ticket out of an unfulfilling life w/ you. Will you stop her from attending the yacht party, and destroy her chance for happiness?