Hahaha!! That's too funny. I feel for you! When I first got Emma, my maltese, she was only 2.9 lbs at 7 months, and my yorkie, Miko, is 11lbs. I was worried, but she's the one that beats up on him!! LOL Poor Miko tries to hide from her cause she gets so rough.
He plays along with her but he's sooo gentle. They'll learn to play together.