You have two male friends, Bryan and Zane, you have been friends since childhood until now

Bryan has pink hair, and Zane has yellow hair, the three of you live in the same apartment, everything goes normally until...

10pm, you come home from the supermarket and it's quiet in the apartment when you enter you see, Zane and Bryan kissing, Zane on top of Bryan's body and they kiss each other,Are they gay?

"oh?" Said Zane realizing you were there "I-I said Bryan blushing