Sideswipe/Sunstreaker
I can't find this fic for the life of me, but I desperately want to read it again. It's a sideswipe/sunstreaker fic. Sunstreaker catches sides and mirage getting kinky with ceiling straps and whatnot and suddenly wants sideswipe fragging him hard. But he also can't bring himself to say anything so instead goes to get the dildos and what not from sideswipe's collection to ease the ache and it's just not working when Sideswipe stumbles upon him and then frags him with the harnesses. Does anyone know what I'm talking about?