Translation #1:
Exaille said that Lena Kovacevic is awesome on that sig.
I dont think thats lena kovacevic?
You are asking, this is a question coz of "?" Imo you wanted to write dial sentence but you placed there "?" so it looks like interrogative sentence.
Then:
I said that you think thats lena kovacevic?
He asks you if he said that you think it is Lena Kovacevic.
Translation #2:
You put there "?" instead of "." and now exaille is trolling you.