This is such a self-destructive act. Being friends with women gives you more chances of a) meeting women, and b) actually knowing how to interact with them when you do.

Speaking from the guy perspective (and not at all to minimize your pain) sometimes pulling away is necessary for managing feelings of rejection and longing; better to pull away than to have a crash out in a year about how her boyfriend isn't you but also still bad. It just sucks all around.