I sometimes pretend I'm asleep to catch the cute things my girlfriend does.
Why do you pretend to be asleep?
When I pretend to be asleep, my girlfriend always does little things.
I know you think you are trying to be cute, but it's wrong to deceive other people. Your girlfriend may become upset if she finds out.
But she never does them while I'm awake.
I understand, but it's still not right to pretend to be asleep when you aren't. It would be better to be honest with your girlfriend about the cute things she does.