Your gut usually tells you if someone is the “One”. It also lets you know that things aren’t exactly right when the other party misbehaves or gives you red flags in the relationship. A tell-tale sign that he or she is not the “One” is that you feel like you must pretend to be someone you’re not around them. This is never a good thing as you’re not the person you’re pretending to be, and eventually, they’ll find this out. If you must put on a guise to get another person to love or accept you, they are not the right person to have a relationship with.