How mean is destroying's someone innocence for your own pleasure?

Scenerio:
You've lied and used someone; making them believe they're the one. You even go as far making false promises about the future, making them live with you, etc. You were their first, they trusted you and fell in love with you; with the false you, false hopes.

By the time that former virgin girl/guy finds out; you've already accomplished your goal. You've drained years (their best years) of their lives, years they'll never get back. It's a horrible experience they can't undo. You knew they were naive. You got no remorse either.

On a 1-10 scale, how mean is destroying someone's kind nature and innocence?
1-3 mild, no big deal
4-6 moderate
7-8 very bad; almost evil
9-10 you're pure evil for doing that
Select gender and age to cast your vote:
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+1 y
So basically you created a horrible love experience for them. Thanks to you, they'll never be the same again with someone else. Rate it on a 1-10 scale.
How mean is destroying's someone innocence for your own pleasure?
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