I tend to have 2 lists, a regular list that could have between 1-3 girls (WL & ML) and then have a wish list(Mainly WL) which are girls I want to try. I'm open about this to the regulars so they know I'm not exclusive.
If I wanted to be exclusive, ...
I would get a girlfriend.
But I also agree it becomes harder u if u see a regular often and connections grow..