i have AJo in BB, utg limps and sb complets..i reraise to 4.5bb and utg calls

flop is and pot is 10bb..i bet 7bb and utg just calls..
turn is a and for some reason i decided to check..and he bets 4bb into 24bb pot and i reraise to 15bb...river is completing the flush..villian bets 15bb and i call..
how much u hate the play here? should i lead the turn for some 12-15bb and fold to a raise?
villian is 55/2

hand2:
i have in CO..utg limps and i reraise to 5bb, utg and sb calling which makes pot 16bb at flop
flop is and i bet 11 into 16 pot(i think this should have been 15ptbb due to drawy board...
utg calls(sb folds) and turn is a so i decide to bet 20bb into 38 bb pot..ive figured that now im ahead of flush draw, AQ and possibly AT...so i could be behind by a lot if villian has set or AK
o make it worse river is and now pot is 78bb..villian instapushes..
i decide to fold due to fact that only hand im beathing is maybe A9 or AT
i actually think he had a flushdraw and used T as a scarecard
problem is that we were kinda depestacked and i needed to call 80more bb to see what he has..
what is your action and how would u play it diferently? villain is 50/3.3/1.2 over 60 hands..

hand 2 -- if he had the nut flush draw ( ) then he backed into a straight anyways