IPhone isn't telling me when someone's read my message?

My iMessage is turned on and the person who I'm texting can see when I've read their message but it's not telling me when they've read my message? It'll say 'delivered' but won't say for example " read at 21:45" how can I solve this problem?

Go to settings>messages>send read receipts and turn it off. The other person obviously has theirs off to. Turning yours off will stop others seeing when you've read their text.

What he said