I'm pretty zen about whether a relationship goes south or not, I don't get too invested. I do want the ability to see other girls though.

Would you guys tell your main girl that you don't care what she does, or is it better to still reinforce some rules?

Probably sounds like a dumb question, maybe it is. In prior relationships girls told me I give the impression off that I don't care about the relationship much which is why I'm considering adding some basic rules about acceptable/unacceptable wandering.