mark kelly, met in 2003 on a cultural exchange visit. >> we sat next to each other on the airplane. she laughs at my jokes even when they're bad. >> funny. funny, funny, funny. >> it's the one thing i noticed about her. >> who was the bigger talker? >> gabby giffords. >> yeah. >> yeah. >> i would say so. ♪ we can be together walking on the moon ♪ >> she brings home this guy that flies around in the sky. he was exactly what she wanted. >> where did you want me to propose? >> from space. >> she thought i was going to propose. like i was going to use -- like this opportunity, to do this big thing, but i'm very focused on my job when i'm doing my job. >> and then what happened? >> no one knows.