Reading other people's analysis has helped me to form my own, so thanks! I think in the first half the girl has blown him off ("you said you couldn't stay") and he's bitter about it ("at least i'm on my own again instead of anywhere with you").
Then in the chorus he decides to give it another go and manages to convince the girl to come back to him. When she does he gets cold feet this time and he blows her off, whether because he's unsure about the relationship or out of revenge, i think the former. He then regrets it when she goes back to someone else. I think the guy who 'sets off her alarms' is a guy who she's attracted to, and the line "I can't be here in time, I'll think about that" is him thinking to himself how he's mucked it up and it's too late now.
Reading other people's analysis has helped me to form my own, so thanks! I think in the first half the girl has blown him off ("you said you couldn't stay") and he's bitter about it ("at least i'm on my own again instead of anywhere with you"). Then in the chorus he decides to give it another go and manages to convince the girl to come back to him. When she does he gets cold feet this time and he blows her off, whether because he's unsure about the relationship or out of revenge, i think the former. He then regrets it when she goes back to someone else. I think the guy who 'sets off her alarms' is a guy who she's attracted to, and the line "I can't be here in time, I'll think about that" is him thinking to himself how he's mucked it up and it's too late now.