You've made this hand massively more complicated than in should be. When he bets 2x pot on flop, surely we are not calling 9 with 49.50 remaining for a gutty with  . So if we have  whats our plan if we flick in 18 bb's and then villian bets turn? You can easily be drawing nearly dead already on the flop, if a fish takes a crazy line it doesn't auto mean its a bluff he can have. Playing 50nl Zoom for me this would just be a snap fold on the flop unless we have  or  . Albeit your instinct was correct on this occasion I just think calling the flop bet with either hand in that spot is going to be -EV in the long run. There shouldn't be too much I thought he thought I thought he thought going on at 50nl. Keep it simple.