Top pair meh kicker on monotone board on the bubble

[flyingmoose]

I'd push preflop. I'd bet, 3-bet the flop. If he just floated me on the flop I'd check/push any non diamond turn and check/fold any diamond. If i did check/call, check/call to get to that river then I'd go ahead and check/call the river too. That huge river bet after 2 really small bets looks very fishy, but unless I've seen him do something like that before I'm just going to pay it off here.