The man pouring Prosecco into every empty cup has moved on to another group, and Katie and I are getting ready to leave the party.
Just before we go, the woman we've been happily chatting with for most of the night comes up.
"If you're interested in dating someone," she says, "you can just say, 'Do you want to grab some coffee?" or something.
"But if you want to hang with someone as friends, what do you say?"