[CazicT]

Bet/fold sucks, Bet/call sucks more.

PUSH is reckless and is turning your hand into a semi-bluff. It might work though if this guy will fold a set. I don't really like option though, but it's interesting.

Check/call MIGHT be ok depending on the numbers (I believe a diamond wins for us if it doesn't pair the board)

Check/fold MIGHT be ok depending on the numbers

check/raise all-in probably isn't good. If he is betting this board, he probably considers himself committed and he will have a better hand most likely.