Cheating roommate

So you guys!!!!! I went out of town last weekend and my roommates car has been down so I let him borrow it !!! And y’all omg guess what. We come back and we decide to go get some food from the mall. I have a camaro so they are right in space. Tell me why I find a PLAN B pill in my back seat 😟😟😟😟😟😟 i look at him and grab it and he immediately says it’s not mine then I look at him stare him in the eye and ask again before I kill my man. Then he’s like ok yes it’s mine ! The worst part is it’s not my co workers !!!!!!! HES STILL Fucking his babymomma !!!! Omg and the shady part is she threw the wrappers in my back seat 😂 smh I had to tell someone so yup. I could not hold it in.