I think it's because nate hasn't been around for along time and for readers who are unfirmilar with him the writer has to establish his backstory quickly. But yeah it's VERY out of place... and it does make his former relationship with maddie seem that much sicker :/

I mean... That would be like sleeping with ur moms twin *shudder*

...also does jean really need someone else calling her mommy? Marvel really have turned her into some sort of holy virgin mother.

< "I like babies!"