its fine that to you this hand has no significant interest and is simple. im not looking for pussyfooting around or sympathy, just want to discuss merits of lines in an effort to improve. might i suggest just not replying to a hand you think is not particuarly interesting.
You've raised preflop and called on the flop which are absolutely standard, could not argue anything else decisions.
Flatcalling the turn with the intention of folding to further action on the river is obviously silly - and getting it in here is essentially a bluff when he never folds anything he isn't bluffing with and should hardly ever be bluffing! Sooo...just fold.