Read Cheating is Better!? Manga:
My wife is being so cold to me right now. She doesn't even bother to cook or to dote on me. I don't even feel interested in her sexually. But when she's out, I find that she dresses up and puts on her best makeup to see, not her best friend, but her new lover. But, instead of jealousy, I feel excited, like this is the state that I like her to be!