I don't think anyone really shipped them but the chemistry that was formed between the two of them in DH1 was by far the strongest, the others just were unfortunately nowhere near as strong. It's just a shame that out of all of the relationships, that was the strongest, in my opinion at least.
Yes! Because if they end them all with Snow at the end, it always leaves you a little scared and worried that he's out there but then In Mockingjay part 2, you'll be waiting for him but then nothing, and that's when you know they're safe and they can live happily ever after. :P