You cannot tell me that this E-2 couple isn't getting aroused under their new circumstances. Iris got a look at a whole new Barry, and her Barry is being shown in a different light, as well. Plus, she's trigger happy!
Earth-2's Iris is getting a little trigger happy on Killer Frost, who we THINK is just trying to help out. Maybe she was trying to make a sudden move with those cold hands of hers. At least when she throws her icy waves, people freeze in her wake!
Zoom gets a little bit too close to Barry for his comfort, and Barry backs away like any self respecting fellow would do in his position. After all, he has no idea who this Zoom even is at this point. Introduce yourself first, Mister, then get handsy!
The Man in the Iron Mask. This looks suspiciously like Earth-2's Wally West. Who's with me?! WHY is he wearing an iron mask, and does E-2 Iris know he exists? More importantly, will we get to follow their story over time???
One mystery I cannot figure out is why some people come into our lives and why some people go. Others become a part of you. Some friendships feel like they'll last forever and others end far too soon. Not every friendship is meant to last forever. What does last forever is the pain when that person is gone.