What did he mean by "you put me on the spot"?

Anonymous
ok abt 3weeks ago i was told by a friend that one of my coworkers had a crush on me but was too shy to say anything. i was a little happy when hearing the news because i always had an eye for that particular person. by the way, my father is the general manager at the company and site i work at so he is the guys boss, just a piece of information you need to know because i was told by 2 different people that was one of the major factors that kept him so shy and weary of saying anything to me. long story short i took matters into my own hands after 3 or 4 wks of flirting and trying to send hints back like hey you, i like you too! 4 wks ago he was driving one of his buds home and we were chatting by his car, when his buddy found out i was single he said omg brian is single too, i'm gonna hook you two up, well brian got so nervous he started backing the car up and i laughed he laughed and it was over... well after that had happen about two days later is when i found out brian had a crush on me, so then it was confirmed, i figured aww he's shy i will try to be more open and upfront because i'm not as shy. so i basically threw myself on the line by telling that same buddy "hey what happened to my date" well he came back to me and said i called brian he doesn't believe me, so i laughed, then two days later he approached me again, saying i'm trying but brian doesn’t beleive me when i tell him you wanna hang out with him and that you are interested. by the way i see and talk with brian myself almost everyday, when he gets in from work and when he gets here in the morning its always normal friend talk with a hint of flriting... well anyway i saw that buddy again yesterday and he kept insisting that brian didn't beleive him and he was trying and trying... well i don't know what came over me but later on when i was going for lunch brian was leaving work and i pulled up to his car and called him over he came leaning in my passengers window and was like what's up... so i said hey your buddy told me you think he's a liar... and he goes what buddy so i described and he said oh ya he does lie... so i said he is not lying. and brian said wait you confused me, so i said brian i told him to tell you something and what he is telling you is not a lie. and brian said he embellishes... so i said well tell me what he told you and i will see if he embellished so brian saidi don't know, and he was getting alll squirmy like moving a lot so i insisted again, and he said amanda you put me on the spot. so i was taken back by that, and quite frankly began to feel a little embarrassed, and i said ok brian i'm taking you off the spot its gone and i laughed so he laughed... and he said where are you going so i said lunch and he said oh ya i'm going home to sleep imtired so i said oh ya and he said ya that game was insane last night and then we hada sml convo abt the heat game and i finished by saying k i guess i will see you in the morn, he said of course you will see me in the morn, drive safe amanda…
What did he mean by "you put me on the spot"?
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