Looking on the internet deeply has found these results:

I thought you might be late. is the most popular phrase on the web.

I thought you could be late. 10 results on the web	I thought you might be late. 170 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Arnie: "I thought you might be late agin." Binny: "I work when I want to." Arnie: "I hate to see ya come in late. Boss git mad at ye ..." Binny: "What's it to you?" Oct 3, 2011 ... ... to find Death waiting for him there, saying �When I saw you in Cairo, I thought you might be late for our our date in Samara, but here you are. Feb 1, 2015 ... "I thought you might be late, and I'd have to cancel my plans to go dump digging with Gert and Nina." "Got things in motion, have you, Ma? Aug 12, 2012 ... �I thought you might be late, but mother said that you might be too tired to come.� � I would not miss your name day for anything,� Catelyn told�...

I thought you could be late.

10 results on the web

I thought you might be late.

170 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Arnie: "I thought you might be late agin." Binny: "I work when I want to." Arnie: "I hate to see ya come in late. Boss git mad at ye ..." Binny: "What's it to you?"
Oct 3, 2011 ... ... to find Death waiting for him there, saying �When I saw you in Cairo, I thought you might be late for our our date in Samara, but here you are.
Feb 1, 2015 ... "I thought you might be late, and I'd have to cancel my plans to go dump digging with Gert and Nina." "Got things in motion, have you, Ma?
Aug 12, 2012 ... �I thought you might be late, but mother said that you might be too tired to come.� � I would not miss your name day for anything,� Catelyn told�...