I don't like the defend pre flop. Would much prefer it to be suited.

As played I'm folding the river. If villain wanted to bluff he's more likely to do it on the flop or turn. His checking range will have a lot showdown value that beats us, and of course he can be making a bad slowplay with AK.

We just beating nothing be bets for value so he must be bluffing air if we're to win the pot, and it won't be often enough.

Yeah I just defended a bit light as it was SB v bt , best either 4bet or fold