Why do some guys act interested and then dont?

I like this guy at my job we talk in our training class he seemed real interested. I asked him for his number and texted me one time and after that never did anymore we had a job activity day and said he wanted to sit by and he did he even was nervous the whole time tried putting his arm around me and everything asked me did I want to go have a drink with him and all at the sametime renig and ran from me at work he talks to me but he comes off rude and like a know it all like always trying to catch me in a lie or something even when I am joking he always trying to give me something like jpear juice or candy I never take at times he seems very nice and a sweet guy and other times like an asshole I asked him one day if I texted would he text said idk if I am not busy I took that as someone who dosent want to be botherd and left him alone but all the sudden he brought it up that why come I didnt text I said because he never answer I just dont know what to think about this guy I am 23 he is 31
Asked Nov 06, 2014

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