Okay I wanna confess something…
So Sheldon and Amy began hanging out in S4 and in S5 Amy became his girlfriend. However, in S7 Sheldon claims that they’ve been dating for 3 years which means that he considered their friendship a relationship( cos 3 years before S7, it was S4) .
My point is that sheldon was into Amy since moment one..
But he was suppressing his feelings.
He was always saying that Amy’s was his friend but he got jealous when she was into Zack and something about a fiancé and stuff. He claimed that pretending to having coitus with her was a great satisfaction. He even enjoyed it when Amy kissed him .he responded with a bloody “fascinating”. In season 5, he told Leonard that Amy’s not for him. He got cats when he and Amy got into a fight.
Amy wasn’t into him tho. She revealed that in the episode when she asked sheldon to meet her mother… she became interested in him after a while.
Anyway, my point is that Sheldon acted like Amy’s just a friend when he knew deep inside that things weren’t like that. He knew amys the one. And then he fell more and more in love with her. He even proposed .
End of convo😂