I get a lot of problems with this situation: There's a flush draw board, and the villian donks. In the hand I showed here I decided to check/call all the 3 barrels because his game play didn't make sense (mostly because he coldcalls my raise preflop with JJ), so I put him on flush draw, but how would you play this hands?

Also, when you get top pair, do you reraise the donkbet, or just float him?

thanks for replies :)