What you do when your best friend falls for the playboy?

My bestie have fallen hard for Playboy.
I know for sure that he a playboy because he had 2 girlfriend at the same time.
I don't want her to get hurt, I told her that he isn't what you think but still.
Well I use to like her but she turned down me,( the reason was she wasn't into me)
But after that she got closer somehow.
And I still care for her and I don't want her to break down, and I don't to be the negative person.
Well if she dates him he will take her virginity and leave her just after that (I know it because he does that)
And if that happens i will completely change.
I am jealous, angry, scared?
And I just don't want her to get hurt
Updates
+1 y
They are dating, thank you all for sharing. I'll just have to move on.
What you do when your best friend falls for the playboy?
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