Songs at least in my opinion tend to not really be grammatically correct. Many song writers try to find words that rhyme or they use slang to appeal to the younger more hip generation. There is that song, 'You don't own me.' But the phrase, "He don't love me." is not something that typically people would say. I recommend don't try to learn English by just listening to song lyrics.

Thank you, Alice. I don't try to learn English by songs, it was just a phrase which I heard and I was curious. Sometimes I try to compare things which I'm learning at my language school with something what I hear in songs or films, because I think it is interesting and we speak to our teacher about that from time to time.

And thank you Zowee, I'll watch it.

It's not exactly 'correct', but it's colloquial, or a dialect. I come from England where we have many different accents and dialects. 'You don't love me no more' could be Cockney, or maybe even Southern American!

However, written down it is not correct. Try watching an episode of 'Eastenders' online and see how they use 'don't' and even 'ain't' = am not...

~"Już mie nie kocha."

„He don’t love me no more“ sounds like it came from a song. Yes. It is supposed to be „doesn’t“ but songwriters have a literary freedom of sorts. I can’t think of a song with exactly these lyrics off the top of my head, but they are surely out there.