I just listened to Sorry, a 2017 song by Halsey recently.
In the beginning, it says:
I've missed your calls for months it seems
Don't realize how mean I can be
'Cause I can sometimes treat the people that I love like jewelry
The character is saying that she is a mean person. Then why does she reason her meanness by saying the last sentence? The last sentence is showing kindness; not meanness.
In another part of the lyrics we have:
Sorry to my unknown lover
Sorry I could be so blind
Didn't mean to leave you
And all of the things that we had behind
If that's an unknown lover, then how did the character have a past with him?