Mayday Parade - Miserable at Best Lyrics Meaning

I think this song has to deal with a guy and girl being in a good relationship but the guy having to leave to find out what to do in life. The lines "cause nothing feels like home
when you're a thousand miles away" and "cause I know I'm good for something I just haven't found it yet and I need it" show the idea of him having to leave. After he leaves he worries about "his girl" being with another guy, and the whole song sort of tears the relationship apart from beginning to end.

It's kind of ironic because in the beginning she wants to be with him but he needs to go. She cries and doesn't want him to leave but I think he gives her hope with the line "but compared to your eyes nothing shines quite as bright
and when we looked to the sky it's not mine but I want it" so they'll stay together while he's gone.

The first chorus part, after he leaves, shows how the guy could start to become paranoid about his girl hanging out with another guy. He doesn't know for sure but it could be possible.

The second verse slowly tears the relationship down by starting with the line "you're all that I hoped I'd find
in every single way", stating that he obviously cares for her and loves her, but then the line right after shows that there's something wrong with their relationship, "and everything I would give is everything you couldn't take." This shows that he might think there's a problem.

Now as the second chorus comes he kind of has an idea that their relationship is over. Because of the sort of "breakdown" of the song (the saddest part to me) shows how much he misses her ("and this will be the first time in a week that I'll talk to you and I can't speak"). He knows that she's with someone by saying, "it's been 3 whole days since I've had sleep cause I dream of his lips on your cheek", and the listener of the song knows it's completely over when he says "and I got the point that I should leave you alone" but he just wants her back.

The final chorus shows the ironic twist because it states that he knows everything that's happened and now he wants to be with her so he'll be miserable at BEST so as the person said above what will he be at WORST?