Just read City of the Gods. Basically, this happens...

Sam and Jack are temporarily stranded alone together on what they think is an uninhabited planet. Sam is trapped and nearly dies, and there are flashbacks to Divide and Conquer. Jack has to give her the kiss of life, then take off all her wet clothes and snuggle in a sleeping bag with her to conserve body heat. Then they find a hot spring, which – the planet being half frozen – they'll have to use to keep warm. 

My brain goes AU.

They discover the native population, and are taken for husband and wife gods. They save some kids, and get to go home. When they return to the planet, they're under orders to pose as the husband and wife gods (Jack has to call Sam 'Chalchi', which made me go all warm and fuzzy inside). Things happen, and Sam thinks Jack has died, and despairs. Jack thinks Sam (and 'their' kids) have died, sinks to his knees, overwhelmed by loss and grief. More stuff happens, SG-1 win out, the end.
Summary for those avoiding the spoilers:

Sam/Jack cliché-palooza! It only needs an alien sex farm, and for Sam to be marrying some complete loser, and they'd have the full set (and I hear one of those things happens in Alliances). Is it wrong that I'm this delighted to discover that some of the Stargate novels are essentially well-written badfic? :D And that I kind of want to write the missing hot spring scene?