In Too Deep

I always took it as the guy was going through a really bad part of his life and then he found this girl that seem to make everything ok.

But then later on after saying she was always going to be with him (I thought you'd always be there, I almost believed you,) she is telling him it's over.

And it would seem almost as if he didn't see it coming and now maybe she already has someone else and she still wants to be friends with the guy singing the song, so thats why it goes..

"Listen, you know I love you, but I just can't take this, You know I love you, but I'm playing for keeps, Although I need you, I'm not gonna make this, You know I want to, but I'm in too deep."

He loves her, but he won't be running 2nd to someone else so thats why he says "He's playing for keeps" and yeah he needs her but he won't be able to deal with that. Add to that, I get the feeling that when they broke up all the sudden she started acting like they never had anything, that could be where the lines "its like we never knew eachother at all" comes from, still he's torn and wants to blame himself at parts of the song because he just can't figure out why shes leaving.. and at the same time she seems to be unable to understand why he's taking it soo bad.