Not fancying a girl that likes you, but fancying her when you're drunk. Then seeing her in town and getting a taxi home together, then accepting her offer of going back to hers. Then sleeping in her bed with her, not sexing, just a bit of kissing.
Then a week later drunkenly texting her asking if she's out tonight. Regretting it in the morning because you're sober and you remember that you don't fancy her. Then getting texts from her and having to be friendly whilst trying to not give her the wrong impression. Then her ringing tonight and you ignoring it, followed by her texting asking me to ring her back cos she has a possible job opportunity, but you turn your phone off because it might be a vacancy at the same place that she works at and you're worried it'll just make things more complicated considering she likes you but you don't like her.