Hello PokerPaul18,
Seems like you Called his preflop raise not he. And postflop should be doable for the reason that sometimes he might as well even raise there with worse hands while it's BvB. Hands like draws, worse Kx or whatsoever and against that kind of range it's doable. Although it's very close, sometimes I even prefer folding there when I have better reads that the opponent is more kinda passive guy but when he has played back on us then do also mention that not only about your game.

Will help to give you better evaluations.
Best regards.