“I think you are.”

[sitifan]

“Am I offending you? Sorry I’m not obsessed with you like everyone else. I know that must be confusing for you.”
“Do you know what?” Henry says. “I think you are.”

https://books.google.com.tw/books?id=1I1xDwAAQBAJ&pg=PT16&dq=“Do+you+know+what?”+Henry+says.+“I+think+you+are.”&hl=zh-TW&sa=X&ved=2ahUKEwijuZvy4Ib1AhXDLqYKHXcZCHMQ6AF6BAgHEAI#v=onepage&q=“Do you know what?” Henry says. “I think you are.”&f=false

What does the sentence in bold mean?

 

[5jj]

I think you are offending me.

 

[emsr2d2]

Or "I think you are obsessed with me".

 

[jutfrank]

Or "I think you are obsessed with me".

Yes, the later context shows that to be undoubtedly the case.