We haven't done this in a while.
As per the house parties thread, I once made a beeline for the person I was interested in as soon as she arrived at a party at my house. I offered to get her a drink, then wandered off and forgot to speak to her for the rest of the evening. I didn't even come back with her drink.
The other memorable one was trying very hard to convince someone on my course I fancied rotten to come back to mine for a semi-imagined house party (read: three saddos drinking Tennents in my living room after the pubs had shut), and not noticing her boyfriend was sat next to her staring daggers at me the whole time. She was so nice about it, too.
Obviously I was quite, quite drunk both of these times.