I found both of their reactions pretty amusing to be honest.
For one, i don't considere Nathan a friend. Then the MC was pretty drunk after that drinking challenge before.
The more important reason was, as Chloe came onto the MC i asked the fuck she's doing, than i asked again what about Nathan, as she pretty much said 'fuck Nathan', i just thaught the guy fucked up somewhen and didn't really care.
Chloe reaction of avoiding the MC and giving him the cold shoulder i find kinda a strange reaction (the giving him the cold shoulder part), as if he did something wrong/fucked up, not her...
Nathan's i found to be a mix of pure hypocrisy, as well as ironie and had to laugh.
Like the guy was totaly ready to fuck some girl for the hazing, or did, if you rejected the challenge. And as the MC pointed that out the answer you got was 'who cares, nobody would have cared, just some fuck'.
Not sure if Chloe would have thought the same, or his reaction if Chloe fucked someone for the hazing.
Ironie because the 'who cares, just some fuck' was excatly my thoughts as i agreed to fuck Chloe and what would i have answerd him