Don’t Laugh about it with the girls
Either you’re sorry, or you aren’t. Laughing and joking about throwing his clothes out on the lawn during a torrential downpour after you’ve apologized, shows you really aren’t that remorseful. If you’re laughing about your actions that means that you still feel that he deserved it. In which case, you should be ending the relationship instead of laughing at his misfortune with your girls. And if you have good friends, they’ll be telling you, you’re above the pettiness.