<human>: I (22 F) met someone at work (a customer, 28 M) who has knocked my socks off, and for whom I am falling very rapidly, if it isn't done already. We have spent the majority of the last 5 weeks together and keep in touch by text all day typically. 

For the last day and a half he's had a bad sick migraine, which has compelled him to sleep excessively and not talk to me much. Okay, I get and respect that and am not freaking out.

About an hour ago though while I knew he was up I asked a couple of diagnostic questions, having done research on how to make the migraine go away. He answered my questions and we didn't really reach a solution, but he thanked me for looking into it, and told me "You're the best".

And now I'm the OAGirl freaking out because that sounds so effing platonic. Guys mainly: Should I be concerned?

Summarize the given text in a few sentences.
<bot>: Guy who has seemed so smitten with me suddenly addressed me as a friend, according to my vernacular. I now feel anxious and bad in general.