10 Signs You Could Be in a Toxic Relationship, According to Experts

A healthy relationship is characterized by a healthy balance of give and take. But in a toxic dynamic, your partner might act as though they're entitled to your time, resources, and emotional energy without offering anything in return, Lawless explains. "The taker will always look for ways that you can continually provide for them," she notes.

In short, they act like an "emotional vampire," Lawless says. "They can feel like a black hole of neediness, sucking you dry of energy and leaving you feeling like no matter what you do for them, it is never enough," she says.