Theres this story which I think is actually a one-shot. Darcy and Steve are together I believe on a mission but they are not dating and havent had much contact with each other. Darcy had a crush on Steve before the mission. Anyways, they have to wait for shield to pick them up; I believe by Coulson in the morning. Its freezing where they are and they have to share a bed since there is only one in the hotel/safehouse. Darcy is wearing thermals and is very cold and she snuggles into Steve and Steve realizes how cold she is and the snuggling leads to more as Darcy starts joking that they could have sex? And they end up having sex laying on their sides, its not overly sexual but still a start to their relationship. Apparently Steve has been interested in Darcy for a long time but Darcy had no clue, as they have sex he says something like "I've wanted you for so long." Darcy asks how long and he explains, "pretty much since i first saw you...?" Any help finding this story would be very much appreciated. Thanks.