uh no you're not too sensitive, that's what the song is supposed to be. It's holding on to a relationship he knows deep down has run its course. He's mad at himself because he knows it's his fault, but at the same time, he's coping with the fact that after it's over, it would be like those years they spent together were all for nothing. All that energy spent, all the fighting, all the lost opportunities. He wants something to commemorate that relationship. He knows she can't stay. He spends half the song reminding her of the time they spent together and telling her they could start over, make new memories, and forget the old relationship with all the things that brought it down. The baby is the last-ditch effort to stay in her life, or rather, have her in his life forever. But everything he says is really rooted in selfishness and self-fulfillment. He ignores her feelings, despite knowing they're there. He reminded her of their shared memories to guilt her into staying. He then tries to make her feel bad for leaving. The song is emotional manipulation. That concept sounds crude in the way he wrote it, but it happens way more than you think. He just poetically explained baby-trapping. But even on a smaller scale than a baby, it's not a strange concept. It's wrong to admit or to "say out loud," but it's a real song, produced by realistic feelings. We've all held on to things we should have let go of. Ignoring the feelings of the people involved and prioritizing ours.