I'm thoroughly convinced that Spencer is the canon story, there are just way to many hints in everyone else's routes that Spencer is into you, and it's the only one where you aren't exposed to something "traumatic" or "dark," (at least not yet, let's see what happens at the wedding lol). Plus, with everyone else's route, their lives or Eric's life changes a lot more than Spencer's if you think about it: Grifter takes a dark turn with his depression and then his ex comes and tries to kill him, Darius takes us to his job and could have potentially died in that motorcycle crash (FUCK ISAAC), Dozer basically has a personality change, and Eric almost get's raped/sodomized through hazing. With Spencer, it's just they come out to each other, they move in together, and Spencer decides to pursue his dreams (or course, let's see what happens at the wedding, but I think that it still stands)
Also, just imagine if this was another sport's team lol