Snarky things are not easy to come up with, but here are some other possibilities.
"I'm not playing hard to get, I'm playing hard to fool." "I'm not as smart as I seem, but I can sure seem smart." "You're not as as you seem, but you can sure seem !" "You're either my downfall or my uplift, not sure which." "Have a really bitchin' day!") This is a word which has utterly dropped off the face of the earth, yet we used it as one of the coolest words back in The Day!)
- script writing doesn't get any better than this. I know, don't quit my day job.