[Triumph36]

Your raises are out of fear, though. You're not trying to get a read on what the opponent has, and in fact, he could have a large range of hands, as you outline. You were afraid to take a free card because you didn't want to face 'tough' decisions, and ended up facing a more difficult one anyway. As coltrane (and I) have said, I think you can confidently fold your hand if you lead out on the turn and he raises. If he calls the turn, you can assume he's on the diamond draw or something like top pair, and yes, you will face a tough river decision.

I'd have to have something like X6 of diamonds to consider the line he took with a draw. Maybe a LAG pushes with the 78 diamonds, but this is an unlikely hand even given his range of hands.