Got into a debate with my roommate, who is LHE player, about this hand. He says donkesque, and while I am iffy about my play, I don't find it donktastic at all.

(How does ultimate bet's hand histories work? Can't find them on the computer.)

.50/1.00 full ring.

Relevant players have about equal 100$ stacks.

Reads: ABC TAG players, except Button, who is a calling station.

HERO holds 6s 6d in CO.

UTG+1 raises to 4, MP calls, HERO calls, Button calls.

pot:17.50

Flop : 6c 7c 9c

UTG+1 bets 13, MP raises to 30, HERO calls, Button folds;
UTG +1 reraises to 60, MP pushes, HERO calls, UTG+1 calls.

Thoughts?

My thought was one of them had a made flush, but that I needed both in for my boat equity to be worthwhile, hence the original raise call. What's my play if UTG+1 folds?