The Flash, Season 6

Cisco:
God, I remember the old days. No doppelgangers, no Flashpoint, no time travel. It was just us against the bad guys. I miss that.

Iris:
I don't know, I kinda like time travel. When you were stuck in the Speed Force, I would have Cisco vibe me to the Waterfront so I could watch our first kiss. You know, the one you had to erase from the timeline to save the world.

Barry:
Why'd you do that?

Iris:
I don't know. I guess when you're filled with sadness, happy thoughts are what get you through the day. And what's happier than getting half your first kiss with the love of your life other than getting to do it twice? Our love story never ends, Barry. Not even with Crisis.

Barry:
Iris, it's inevitable.

Iris:
Maybe. But whether you vanish or... or worse, I am gonna be there with you. I'm gonna right there with you to the very end, okay? Because the only thing more inevitable than Crisis is us.

Barry:
Iris is right. Whatever's in store for us, they can't change what we mean to each other. Can't erase what's in our hearts. As long as we hold on to that... we've beaten Crisis before it ever begins.