As played good fold. Personally, I raise to 200-250 preflop with a limper in front, and I push the flop (pot would be 450 with you having ~1100 in chips so any decent bet you make commits you).

Your flop bet is borderline, by the way. MP2 is getting 2.9:1 to call and 3:1 odds are generally accepted for a flush draw (4:1 shot + implied odds).