5 Seconds of Summer - End Up Here Lyrics Meaning

I think this song is about a girl who walked into a party. She's the new girl and she's troublesome- " you walked in everyone was asking for your name, you just smiled and told them trouble" . He is drunk and leaning against the wall watching her thinking about how hot and cool she is- " my head spins pressured against the wall, just watching your every move, your way too cool...".

He is wearing a Kurt Cobain shirt (Nirvana) and she is into the same type of music, se compliments him I his shirt and they leave together and head to her house- "you said you liked my Cobain shirt, now we're walking back to you place, your telling me how you thought that song about living on a prayer" this shows that she is into the same music because the song about living on a prayer is by Bon Jovi, which is the same kind of music as Nirvana ( reference to Kurt Cobain shirt).

They do the dirty and he wakes up unsure of how he managed to get there, because he was drunk which can be seen by the lyric " my head spins".

He realised what happens and his friends all think that she's out of his league and will leave him because he is a player " my friends say I should lock you down before you figure me out and you run away". But he feels something for her and her likewise " but you won't and you don't as you kiss me and you tell me that's your hear to stay ".

After that the chorus turns into a more 'how did I end with a girl like you?' Sort of thing rather than a confused 'what happened last night?' Sort of thing. He is worried and insecure because she is fit and hot and cool and he's not-" call me lucky coz In the end I'm a 6 as she's a 10, she's so fit I'm insecure". He then becomes confused as to why she's with him- " but she keeps coming back for more, how did we end up here?"

This is my interruption of the song anyway,
Thanks