What can I add to my story?

I'm working on a long fic with slow burn, I have some activities that the man characters can do, but I'm still looking for more activities that they can do for form a strong bond.

They are two 16-year-old boys who have been friends since childhood, and little by little, they rediscover their feelings. Boy A is the studious, intelligent and stubborn type of guy, Boy B is stubborn but somewhat depressed and he is totally in love with A. They both like video games and going out to different food places with another group of friends.

So I came here to ask. I'm listening to us!