Sometime during Season 2... maaaybe. I'm guessing the writers will spend most of the season building up to them getting together - like they did with Pacey/Joey in S3 of Dawson's Creek. And TVD has one of the same writers so maybe!

I HOPE!I HOPE!I HOPE!

i think end of season two..or season 3!!the writers knows that we waiting for d/e story....

Not get together, I think, but some more action, like a kiss (kisses would be better). And Delena playing around with each other, Stefan suspecting... it'd be so awesome! But I doubt they'll get together in season 2... if they ever get together, because maybe it's just like they hook up and then some toying with each other. Either way, it'll be amazing!
The sooner the better... season 2!

I want them together at the end of the show.

I think definitely S2. S1 finale is too soon. S2 premier is still too soon. S2 finale is too late, and waiting for S3 is even more late. I really think it will be S2.

I figure S2 will be building up to something happening between them in the season finale.

more of mid season 3

They are not going to ever be an official couple, not until the show eventually ends. She is going to stay with Stefan and live in denial :P