10/20 HU 150bb on flop top pair?

[PokerAmateur4]

well i was pretty tired but...

at the moment i was thinking the 3 bet says it's not a bluff, but a mediocre hand, a draw, or a great hand. maybe less chance of a great hand as he might just call my c/r and let me hang myself.

i can see him calling me here with a middle pair, Qx, TJ...

but maybe i'm wrong and it's spew, i dunno

also i think he just checks behind mediocre holding if i call the flop...