I think it's about a guy who is in a relationship with a girl he doesn't like but stays anyways because he can't get over how physically attractive she is. Thus the "gun" is her sex appeal and he knows just being with her for the physical aspect is not good but he is too addicted.
"no one comes to bed to sleep" is also a reference to sex.
he says "kill me while I'm sleeping because he knows he is using her and it's wrong so he wishes he could end it.
"If you ever want some trouble,
But can't afford the alcohol.
I'll be here" - that to me sounds like he is ready for a one night stand any time
I think it's about a guy who is in a relationship with a girl he doesn't like but stays anyways because he can't get over how physically attractive she is. Thus the "gun" is her sex appeal and he knows just being with her for the physical aspect is not good but he is too addicted.
"no one comes to bed to sleep" is also a reference to sex.
he says "kill me while I'm sleeping because he knows he is using her and it's wrong so he wishes he could end it.
"If you ever want some trouble, But can't afford the alcohol. I'll be here" - that to me sounds like he is ready for a one night stand any time