" Given Nate's character, if he expresses his disapproval at all, he would privately tell Cyclops what he thought, and leave it at that. I have trouble picturing Nate getting more involved in someone else's relationship matters (yes, even a family member's) than that. "I definitely have to agree with you on that. Although if it was a little more fresh and recent and Jean was still alive, and being cheated on I think I could see him acting a bit differently. Nate has never seemed the type to keep his disapproval or judgements quiet. But in this case I don't see it really coming up, at least not early on. After Rachel's reaction to Emma, I don't think they'd really go down that road much if at all. It would likely seem redundant.