Your exhausted husband comes home from work at 1 AM. You can smell feminine perfume on his work clothes, but it's not your perfume. Now your attention is focused on the corner of his lips—they have a trace of woman's lipstick.

You suspect, is he having an affair with another woman?

Finally, you manage to voice all the question that's been on your mind to your husband. However, only irritated remarks and frustrated grunts came out of his mouth.

"Shh, I'm tired, can you keep quiet?"