What is the worst way to respond to I love you?

What is the worst way to respond to "l love you"?

1. Message seen at 12:41
2. No you don't. You love the idea of it. You love the idea
of being in love, but you're not. You're too self
centered and dumb to love anyone. You think
infatuation is love, but it's not. You're just too stupid to
know any better.
3. k.
4. Shut up baby, I know it.
5. We need to talk.
6. You don't know what love is, Forrest.
7.I know.
8. That's adorable.
9. Good for you.
10. You're just not terribly important to me.
11. I love... Cake.
12. If you really loved me you would swallow.
13. If I could only get your sister to say that.
14. Go to hell grandma.
15. Aww, me too, You're such a great FRIEND.
16. I love me too.
17. Who doesn't?
18. Wait, are you pregnant’?