Yes, association with escorts can protect committed relationships by satisfying the male need for sex with new people. If a man is going to have sex with a non-profesional woman a certain amount of time must be invested to convince a woman that the man likes her on some level. A man does not need to like a woman to desire her sexually but a woman will not desire a man unless she thinks he does. In the course of spending time the man might actually develop feelings for the woman and the result is an affair. Since men do not have to spend time with escorts to reach his desired conclusion. Escorts are not motivated by feelings, and in this way they have something in common with most of the men who seek their services. Hence the chance of feelings developing is much less and men return to the relationship that matters, untouched emotionally.