Why create distance? If you're generally good at getting on with girls, just keep doing the same. As long as you don't escalate, they'll still feel all happy and validated, and eventually they'll just friend-zone you. Problem solved.
I've had a lot of luck making female friends simply by relating to them on the right topics. Maybe you both have a tv show you like, for example. Gossip is another great way to relate to women.
If you're not flirting with them, they'll generally just friend zone you after a while. For a long time I actually had this problem where I found women easier to connect with than men... but couldn't attract them to save my life.