There are a few advantages to sleeping with ex-lovers, no matter how hung up on them you are. One is that, though you are both certainly telling yourself that it's just sex and a one (maybe two) time thing, the familiarity of a past romance may allow for a shower in the morning, a moment to wash off the smoke from that after hours and the beer spills from the party before. You know probably know where they keep the spare towels- failing that you've probably been naked together enough times that using his towel doesn`t seem as appalling as it otherwise might. So I woke in a familiar place, hungover or maybe still drunk, I stepped down a familiar hallway, knowing which creaky floorboards were best avoided, I knew to wait at least 30 seconds for the water to warm up before stepping into the shower, I knew that the black towel was the roommates, the blue was his, mine for the day. I knew that even though sharing a toothbrush is a little gross it was probably a better idea than to leave smelling of cigarettes and beer and ass. I reached into the medicine cabinet for toothpaste and on the shelf above it there was a bottle of cologne. I smelled it, I smelled him. It feels stupid now because of course no one smells that good all the time but at the time I felt cheated, I felt betrayed in a way that was so irrational and powerful as to make me nauseous. It felt stupid then because I was smelling every memory I had of us from a bottle.