Because he bought her a house.
Because their children will know that they are soulmates.
Because...
Pam: I'm such a dorky dancer.
Jim: I know. It's very cute.
xxxxxxxxxxxx
Pam: I knew it.
Jim: You did not know it.
Pam: I knew some of it.
Jim: Everybody knew some of it.
Pam: It's Christmas.
Jim: You knew it.
Pam: Thank you. I knew it.
Jim: She knew it.
Because he bought the ring one week after they started dating.
Because he wanted to marry her the day he met her.
Because their children will know that they are soulmates.
Because...
Pam: I'm such a dorky dancer.
Jim: I know. It's very cute.
xxxxxxxxxxxx
Pam: I knew it.
Jim: You did not know it.
Pam: I knew some of it.
Jim: Everybody knew some of it.
Pam: It's Christmas.
Jim: You knew it.
Pam: Thank you. I knew it.
Jim: She knew it.
Because he gave up a chance for a job at corporate to ask her on a date.
Because he'll do anything for her.