whitch seris is it that abs and tim have a fling

I bielve that is was in season 1 not sure what episdode it was..I know it was after McGee stayed at Abby's house and Tony сказал(-а) oh Ты spelt in the coffin and McGee saws to Abbs I thought Ты toldme it was somehting else..I believe it is in the one that eposide Dean Man Talking that Ты are thinking about.

Season one