odd numbers

This came out of an observation recently that being currently single I often find myself in odd numbered groups of people, and the others are all matched pairs. This led to a reflection that this sucks, I still believe that one day the fifteenth will be true. I feel better now, and yes there is a stolen line in there but the chance was too good to miss :)
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one name without an ampersand
and a significant absence of other
the third drink in the round
and a shared joke lost
a fifth seat at the table
and a comment theme unseen
seven deadly sins
and sampled every one
nine o'clock on a Saturday night
and it's the clack of the pool balls, neon buzzin
eleven times invited
and as many left behind
thirteen places to go
and no-one to go with
fifteen times tried
and only fourteen times failed