What's a sassy reply to a guy when he says you stole his heart?

So, my boyfriend always says I stole his heart, or he lost it to me, etc.

He just texted me "There goes my heart, again..." and I need a sassy+cute reply. I always say something like "aww haha" but I'm bored of saying that.

What can I say to that, "There goes my heart, again..." ?

Thank you :)
What's a sassy reply to a guy when he says you stole his heart?
Post Opinion