Are we even real?

Dan Howell and Phil Lester doesn't know each other. They go to the same school, take math together, that's all. But suddenly their math teacher decides that both of them should participate in a national math competition, and of course, both of them is extremely surprised, and they get to know each other better, know each other's secrets, and maybe the see, hear or do something that they shouldn't have done... The rest of the school calls them a couple, but personally, they don't know. They aren't even sure about their sexuality, right? But they like each other, very well... Are they even real?