I'm not sure how your 1/2 plays but at my games with a limper already in the pot your $11 pre flop open in MP (I'm guessing your seat as it wasn't provided) is too small. I wont say it's spew but it's inviting a very multi way pot and reducing your equity drastically. I wold make it 15-17 to go here.
AP It's not a perfect flop but you're ahead of soooo many hands here bet the flop ($25-30). Someone may playback with just the A
or a made flush, then you'll have to make a read. Bet fold is fine if it's coming from a tighter nittier player.
Turn improves our hand, assuming we got called on flop a check or value bet could both have merit based on how the action went, what Vs remain etc. AP, your call / call line on the turn is designed to induce a river jam against your young LAG. You got what you wanted and the LAGs range is certainly wider than just flushes. Your hand is so under repd it's sick to fold against this player description. I probably pay him off here but I would have played the hand differently and may have been able to fold based on different action.