Best Pocket Of best Birthday Other Mother son in law Images. Dear mother-in-law, today I want to reveal a secret to you. Dear mother-in-law, today I want to reveal a secret to you. You are the mother-in-law that every daughter-in-law wishes to have. Happy birthday. Don’t think that your daughter is the only person in the world who loves you, admires you and is fond of you. I am competing with her when it comes to you. Happy birthday dear mom-in-law.