Flopped flush, lots of action

[nietzreznor]

Pokerstars .25/.50 (full ring)

First hand at the table, so no reads. I post in CO and pick up 76 [img]/images/graemlins/diamond.gif[/img]. It's 7-handed at the moment.
UTG+1 ($28) makes it $1.50 to go, MP1 calls ($91), and I call ($50).

Flop (~$5): Q [img]/images/graemlins/diamond.gif[/img]T [img]/images/graemlins/diamond.gif[/img]8 [img]/images/graemlins/diamond.gif[/img]

UTG+1 bets $3, MP1 calls, I raise to $15, UTG+1 pushes, MP1 pushes, I call.

Maybe this hand is too simple. Just wondering if this is an easy call, or if anyone would fold here. MP1's call of the original bet, then push worried me. Could be something like the nut flush, but I see people pull this with the naked A [img]/images/graemlins/diamond.gif[/img] all the time. No idea what UTG+1 might have, flush/straight/set/TP/draw all seem possible since he's short stacked.

Thoughts?