Was my father harsh on my younger sister?

She's currently 19 years old and her 2nd boyfriend cheated on her 3 times.

Even though she was in tears, this was my father's reply:
''Not another word on that. You're stuck in that position because you want to be. It's your fault now. I'm out of this drama and have no comments anymore.''

He made it clear he's not going to verbally bash the guy nor curse on him. He was like ''Why should I if she keeps selecting losers and staying, that's all her fault. It's not a kid anymore''. He's also not comforting her when she cries about it either. Is my father being harsh on her?
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He also thinks that if she gets cheated on again, she's now asking for more by continuing to stay.
Was my father harsh on my younger sister?
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