It is a common line used in the break-up of a relationship. Often this line leaves the other person thinking it is really “them”. We use this line to soften the blow when we end the relationship, but we really think it is “them”.
The line “It’s not you, its me” is true however, it is about “me” and it should be about “me”. We should not judge others in their habits, idiosyncrasies, etc. and blame them.
It is hard to accept blame ourselves for who and what we are, so we think to ourselves that it is “them”. But it is not.
We have to realize and accept the truth within ourselves, and admit, yes it is ME!