yet another pair of aces

Villain is multi-tabling regular 25/11/2.5 and always seems to be one of the better players. He's been calling a few of my C-bets but this is the first time he's re-raised. I felt pretty sure he had a flush. Is this just junk? If so I won't do it again.

Stage #605949671: Holdem No Limit $1 - 2007-03-17 12:51:35 (ET)
Table: DORA AVE (Real Money) Seat #5 is the dealer
Seat 5 - BUTTON ($75.84 in chips)
Seat 6 - KAGEY22 ($138.03 in chips)
Seat 1 - BB ($40 in chips)
Seat 2 - VILLAIN ($329.19 in chips)
Seat 4 - MP ($134.85 in chips)
KAGEY22 - Posts small blind $0.50
JOEDOE41 - Posts big blind $1
*** POCKET CARDS ***
Dealt to KAGEY22 [Ad Ac]
VILLAIN - Calls $1
MP - Folds
BUTTON - Calls $1
KAGEY22 - Raises $4.50 to $5
BB - Folds
VILLAIN - Calls $4
BUTTON - Folds
*** FLOP *** [5c 8c 2c]
KAGEY22 - Bets $9
VILLAIN - Raises $18 to $18
KAGEY22 - All-In(Raise) $124.03 to $133.03
VILLAIN - Calls $115.03

i dont think it's awful or anything, but i bet he has a set or flush after limp-calling and being pretty tight, and almost definitely does if he calls ur push.
would he make a hero call vs you with a worse hand? if not i guess call the flop raise and lead the turn, folding to another raise without pot odds.

I don't know if some might think it's weak but I might just call his donk bet and see what he does on the turn.

looks pretty standard.