I think this song is actually about a couple still together but the girl is cheating, and the guy is saying, if you aren't here then whose house are you at and which guy are you sleeping with.
So darling, if you're not here haunting me,
I'm wondering whose house are you haunting tonight?
Whose sheets you twist,
Whose face you kiss?
Whose house are you haunting tonight?
I don't think much about you anymore.
I think what is saying here is not so much that he is not actually thinking about her, but that he thinks less of her, or thinks that she is nothing, because she cheats.
I think this song is actually about a couple still together but the girl is cheating, and the guy is saying, if you aren't here then whose house are you at and which guy are you sleeping with.
So darling, if you're not here haunting me, I'm wondering whose house are you haunting tonight? Whose sheets you twist, Whose face you kiss? Whose house are you haunting tonight?
I don't think much about you anymore. I think what is saying here is not so much that he is not actually thinking about her, but that he thinks less of her, or thinks that she is nothing, because she cheats.