Is this love. ?

My best friend is in relationship since 5 years. But since last one year they are fighting. Her boyfriend is very mean to her, keeps arguing with her, break up with her every alternate week. But then in a day or two he comes back saying that he is sorry and my friend keeps forgiving him. She says she is exhausted. Then I asked her why don’t you leave him and she replied that she loves him and can’t leave him.
Is this really love?
I don’t get it!
Is this love. ?
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