Shenseea drops off a tune of assurance for her lover, letting him know that she’s all his and not all over the place. She wants him to keep it simple and not overthink or even think about who she’s been with before, as it causes mistrust and uneasiness.

“Body Count” refers to the number of people that you’ve sexually associated with or have killed. In this case, Shenseea’s referring to sex. Instead of him worrying about her body count, she wants him to make the body count instead.