Villain has 201$, I cover. I''m on UTG with i make it 7$, a solid but little loose player from SB calls.

FLOP (pot 16$):

He bets 14$ i raise to 36$ he flat calls and now i put him on KJ-KA.

Turn (pot 88$):

Ok this is a scare card for me, because KQ is definitely very probable, i bet 65 $ he flat calls again.

River (pot 218$):

He now pushes allin for his last 93$, pot is very big so I can't actually fold this. Or can I?.

My question is if should i play this any different, should i raise flop more? Thank you for your replies.