#6: He Begins Keeping Secrets
When a man acts secretive and decides not to share anything with his woman, it is a clear sign that he is no longer in love.
When his girl questions him about his feelings that should be important to him and stuff he would normally share with his girl, he responds rudely, often snapping at her and telling her to mind her own business.
In this scenario, the guy will start asking the girl to leave his cell phone alone and to not bother with his things. He will act like a stranger and begins keeping things from his lady. This is when the red sign should go up.