Complimenting your crush who is in a relationship Watch
If I found out he took it out on her, I will be less than impressed and quite angry.
Take it out on me, by all means - not her. Ever.
And I know this sounds like i'm piling it on, but you can't really whiteknight someone over something you kinda provoked
I think you really need a change in perspective about what you honesty want and are trying to accomplish here, not to mention how other people view your actions.