According to Osho, he mocks marriage not as love itself but as the social mask people wear—most couples suffer yet pretend otherwise. Stories end at the wedding because what follows is unshowable; tongues are tied by fear and convention. His satire exposes hypocrisy so individuals can see their truth. If your marriage is truly blissful, fine; otherwise, come alone and look honestly.
He jokes about marriage because many people hide pain behind smiles; if yours is truly happy, great—just be honest.