In the original manga, Wolfwood hated Milly and even pointed a gun at her head and was about to shoot.. if Vash didn't stop him. :|

Oh! I know what there thinking! Wolfwood: Dude, she is sooo hot. I'm going to ask her on a date.. Milly: Dododoo.. BananaSplits and Doughnuts, Cookies and milk, and Doughnuts...Hehehehehehe! ...Lol XD

Her expression is cute.

whaaaaaaaaaaaaaaaa?