This sounds like a guy who's fed up of his girl cheating, never being home "you're never here in this bed of mine" and he wants to kill her, asking for one damn good reason why he shouldn't just let her live and have sex with her "give me one good reason I should give you love tonight". From the "give me one good reason why" it sounds like he's not ready to give up on the relationship yet.
This sounds like a guy who's fed up of his girl cheating, never being home "you're never here in this bed of mine" and he wants to kill her, asking for one damn good reason why he shouldn't just let her live and have sex with her "give me one good reason I should give you love tonight". From the "give me one good reason why" it sounds like he's not ready to give up on the relationship yet.