XJacksepticeyeXMarkiplierX

Sean/Jack went to visit Mark and Mark has feelings for him but doesn't think Sean will like him back. Mark doesn't want to tell him either..let's see how well that turns out.
It will be up to you guys if you want a lemon or smut. THIS IS ONLY A FANFIC. DON'T TAKE IT SERIOUSLY!!
This is my first book I'm sorry if it isn't interesting but I will try my best!