brian sleeps with michael

[maria1808.livejournal.com]

hi! could you please help. i feel i really should know this, its blatantly gonna be something really obvious but im looking for a fic where Brian sleeps with Michael just the once and justin finds out. the only real detail i remember is justin lying on the bed in the loft and brian trying to talk to him and he suddenly jumps up and Brian says something like "Wtf you were fine a minute ago!" Justin may have found out by overhearing Brian and Michael at the diner or I may be mixing two stories together.
thanks so much for your help!

found it! its called Ceremony, link in comments but Cross reference is a fantastic fic too. thanks everyone for your help!