He could do a good job of hiding his feelings, even from himself.

But then again, he had a lot of practice in hiding his feelings.

I never was very good at hiding my feelings, she thought.

Or perhaps she just better at hiding her feelings, he thought.

At all costs she would have to hide her feelings.

But as the months became years she could no longer hide her feelings.

Now, no one will ever think you are hiding your true feelings.

She was past the point of trying to hide her feelings.

And what would happen if she couldn't hide her feelings?

He has become very good at hiding his real feelings.