Aw, poor Much in last night's episode!
First he shows how devoted he is to Robin by declaring that he'll die if he dies, and then everyone is horrible to him at the end. I have a theory about that though - Much clearly knows everyone is going to tell him to shut up, but he still acts up with them, and it seems to me as though it's his way of getting some kind of affection substitute from them. Awww.
But he was flirting with that kitchen girl. Maybe he's forgotten about Eve? Maybe he was trying to make Robin jealous...
My fuller thoughts on the episode are
here (with spoilers).