This type of dater is not looking for commitment at all. Their main goal is to have fun, nothing more and nothing less. If they are a strong serial dater, they will not interact with anyone who is trying to disturb their fun.
It is impossible to convince the serial dater to be a monogamous dater. Why? Well you would have to look at the reasons why people become serial daters. They either do it out of extreme relationship Fear or severe single Fun. You know how it goes. Once a person has been hurt, they may shy away from commitment. And our common sense knows that those type of folks have to heal and get to a healthy place to desire a relationship. Those that are in it for the fun, are just that, in it for the Fun. Serial daters have decided to serial date; they have to undecide that for themselves. This type of dater can be encouraged to become a monogamous dater, usually via concurrent dating.