What is this anime series?

Question

at 3:15

http://www.youtube.com/watch?v=1w7JyjWwANQ

Answer 1

It's Marmalade Boy:

http://www.animenewsnetwork.com/encyclop...

http://en.wikipedia.org/wiki/Marmalade_B...

The main character is a girl whose parents get divorced and remarried to another couple who also got divorced. The second couple has a boy, the male lead, who is her age. The series also follows the relationships of many of their classmates (and rivals.)