gae for bae - you get a hard-on for someone of your own gender and you say

you get a hard-on for someone of your own gender and you say they are your bae because you think they are the best

My friend got a hard-on for his classmate and now they are best friends.

I got a hard-on for my guy in math class and now I call him my bae.

My brother saw his friend and said, 'You're my bae, I want you to be my husband.'