Manipulation has no place in an honest, healthy, and happy relationship. Even though it’s tempting sometimes, two people who love each other will rise above that and sort out their issues rather than resorting to manipulating each other. Being controlled like that can do a lot of damage to your (or your partner’s) self-esteem and happiness. So it’s a clear sign of a toxic relationship if you realize that your partner is manipulating you in some way, or if you’re manipulating them.