You asked a very good & important question. Suppose lil Jayne is a true character in real life. The question that needs an answer is:
Was I telling her through the poem to forget all about me and go her separate way Or
Was the poem just my way of telling her that she was a very bad girl who couldn't feel my love and that she needs to pay more attention to my heart?
The answer only lies inside lil Jayne's head. She is the only one who can answer this tough question. Her choices are open: either to forget about me or to just go on with me paying more attention to my needs.
This means that this poem can serve a very important purpose in today's love life of new age people. The purpose can be one of break up or one of strenghtening relationships.
I think they should include this poem in the book of great literary works (if such a book existed).