"Lao Fang, accompany me to the WC."
They were inseparable.
"Lao Xiang, I don't know how to do this question."
They answer each other's questions.
Two boys majoring in science have known each other since elementary school until college.
Play ball together, go to class together, do questions together,
It is enviable and desirable.
They both know each other's goodness and beauty.
They vowed never to be separated for the rest of their lives.
Concept: enviable love.