Definitely. And I don't understand the exact psychological dynamics of this.
All I say is my friends who go all out hitting on girls, getting them drunk, almost never get laid.
Other friends of mine who relax, who don't have an painstakingly obvious agenda every time they go out are usually the ones who already have girlfriends.
Also, girl-friends of mine say they actually prefer getting to know a guy a little bit, and just letting nature take its course. If two people feel right, things will progress in spite of themselves. The guys who are too aggressive in pursuits usually come across as creepy.