[blumpkin22]

I understand your reasoning behind the way you played the hand. I think the problem is that, while your raise on fifth shows strength, it can also be misconstrued as a semi-bluff with the three diamonds showing. Moreover, with the dead diamonds and your completion on third street, it is fairly clear that you most likely do not have two diamonds in the hole, but rather split tens, some pocket pair, or (less likely with you being in early position) just big cards or perhaps some gapped 3-straight. Thus, I think there is a reasonable chance (how likely it's hard to say) that your opponents put you on a pair of tens and picked up a 4-flush on fifth street, or were just bluffing the diamonds. I think you will see a smaller two pair here often enough to make a call profitable on the river (although you should expect to lose to a straight or trips more often than not).