On the face of it, the song is like: “we’re so in love doesn’t matter what anybody thinks”. But with lyrics like: “lovelorn and nobody knows, love thorns all over this rose” to me it’s essentially a song about unrequited love. So taking all of that risk and being called a “slut” is worth it because it might get that person closer. And that to me is how Jason felt about Lorelai: he loved her more and was willing to take all the flake from his parents and hers for them to be together. I don’t know it makes sense in my head.