This sort of thing you won't care so much once you chiong enough, end of the day is just a paid service. ML become lao lan then change loh, not like her cb made out of gold and cannot be replaced.
Speaking from personal experience I have fall out with my regular MLs, mostly them suddenly changing attitude because I find another girl. For girls working in this line, some of them got really big attachment issues and get jealous when their customer find other MLs