My thoughts about this hand:

Preflop:
Had no hand with this Player before... he opens from BTN ... Thinks he Opens wide. I only call cause hope to get BB with a call in the Pot to get a good Price for my pure A Flushdraw. BB also called so 3 Player in the Pot. :-)

Flop:
Hit my NutFlushdraw and also two bad Straight chances. Made the Donkbet to Get Info if BTN or BB hit on this board.
BB Folds and BTN Raises. after his Raise my Potodds are almost 30% so I could call with my Hand. Gave him Handrange (JJ,88,77,T9,J7,J8,87) so with my Hand I have Equity of over 55% against this Handrange (so I´m in Front and also have a Blocker to his possible JJ).

Turn:
The 6c Appears and gave me a low Straight. If he holds a Set now Then now I´m in Front. the only hand who beats me in this moment from Handrange I gave to him is the T9. I Tried now to find out if he has this Hand. So I only bet 20% Pot and gave him 6:1 Potodds. My intention to do this is if he holds Set I think he will call. If he holds T9 I try to say him that I´m on Flushdraw and give him the possibility to Raise to save his Straight against a possible Flushdraw. If he Raises then I can safely fold or look if I get right Potodds to call for my Nutflush. He only Calls... so now I´m almost sure that he has no Straight.... So the Hand I gave him in this moment is a Set 7s,8s or Js.

River:
The 2h appears and changes nothing on my decision that he is behind my hand. Now I can make a Valuebet by myself or let him bluff his hand (but nothing changes my mind in this moment) so I gave him the chance to Bluff... My thoughts are now If he now wants to bluff me out he will almost bet Pot and then I call... he did it and so my thoughts are complete and I gave him safely a Set on this board and so I called.

What do you guys think at this thought Process?????