The song describes Lekman having an awkward dinner with Nina and her parents. He's pretending to be her date so she can hide the fact that she's gay from her father who has a "catholic heart [which] is big and slow".
He "thinks about [her] every second" but knows it will never amount due to her preferences, so I'd suppose that the song is somewhat sad in that respect.
"Don't let anyone stand in your way" is probably a plea for Nina to not hold back or hide the things that make her who she is and what makes her a happy person. That she shouldn't let her father's conservative nature "stand in [her] way".
The song describes Lekman having an awkward dinner with Nina and her parents. He's pretending to be her date so she can hide the fact that she's gay from her father who has a "catholic heart [which] is big and slow".
He "thinks about [her] every second" but knows it will never amount due to her preferences, so I'd suppose that the song is somewhat sad in that respect.
"Don't let anyone stand in your way" is probably a plea for Nina to not hold back or hide the things that make her who she is and what makes her a happy person. That she shouldn't let her father's conservative nature "stand in [her] way".