She kept her suspicions to herself and gave him a broad smile.

"A gentleman would have kept his suspicions to himself."

Still, she knew there was no need to keep her suspicions from this man.

They've never said anything, though, so we keep our suspicions to ourselves.

He wanted above all else to keep his suspicions from her.

I kept my suspicions to myself and loved her for them.

Being a woman, she did not keep her suspicions to herself.

You just keep your suspicions to yourself from now on.

He wondered why he couldn't have kept his suspicions to himself.

Or, even worse, if anyone had, they'd kept their suspicions to themselves.