Girls do you think this is weird?

So lately I've been talking to my crush. Last night I slept pretty late like at 3 am or so but I woke up early like at 7. He texted me that morning and he said, "You should get more sleep you slept late last night"

and I was like, "How did you know?"

He said he saw it on my Facebook what I was active 4 hours ago. Mind you we usually talk on iMessage not on Facebook.

Should I be weirded out he knew what time I slept? Idk how to react to this. What do you guys think?