Since we're not keeping girlfriends but want sex and intimacy every now and again. This is how you do it.

1. NEVER give her any more information about who you are besides the phone number. Burner phones are ideal (thanks elrctric ghost)
2. NEVER bring money on your first date. This may sound crazy but it's saved me a lot of money. If the girl is worth seeing again you can always say you'll make it up the next time otherwise you get PAID for your time wasted ; ) This is a great strategy.
3. SHOW UP LATE.5 -15 mind is ideal This is your time. Do not rush to her. Women are late quite often. The burden of time must be on her.
4. Have sex with her no more then 2 times. The 2nd one being 2 weeks apart. As to not get attached. Then get rid if her number (block) and on to the next loser.

If anyone has any additional strats please post!