Well when i was sitting next to woman in that course i never talked to her (although i wanted to ask her questions) and she never talked to me. 2 months passed and asking her suddenly after 2 months would be strange and uncomfortable.

Also if that woman was one who i got crush on or fell in love with, i would be too shy to talk to her and feel uncomfortable not being to focus.

With man i feel easy like he is my brother and i can ask him whatever i want.