starting off, regarding the two main character's relationship and genders, they're really open to your interpretation. of course, the person calling had feelings for the other one, but it's up to you whether or not you think they were in a relationship.
, no pronouns are used, so yeah , while this was intended to be male x male, you can interpret it however you want to.
um, person b (the one who died) was in a car accident, because they were driving drunk. yeah, that's based on looking for Alaska. you can make whatever you want out of the reason why they were drunk.
