Lately, I'm doing fairly well for myself but the problem I struggle with is the communication about being upfront with girls.

How do you normally work in how you feel? In this case, lets just go with the scenario that you're not really looking for a relationship.

Do you normally just mention it out of the clear blue or do you wait for it to come up? Bonus question: if you mention it early on, how often would say that has impacted your chances with said girl non-preferable results?