First of all, special thanks to The Red Baron for teaching me this method. 
So guys,
You want to date a girl and enjoy all the aspects of this without locking yourself down. I will tell you right now, this is totally possible with almost any woman is approached correctly. As I said in my intro, my buddy that I go game with regularly taught me the art of this technique, and any input from him would be greatly respected and appreciated from me.
Quick little story. I have been hanging out with an HB9 as of late. She is gorgeous, awesome and a blast to be around. Even more fun to get intimate with. She was telling me a story about a guy she was seeing previously telling me he literally called her 10 times in a day. True or not, I could not care less. I don't think she was telling me the story to try to make me jealous or give me a sh1t test though, she was telling me that he told her that he was talking with another girl to try to make her jealous. She then told me that she said "Well we are not exclusive, so you should take advantage of opportunities that you have." I used this chance to say "I totally agree, I think that getting exclusive is not a great idea until you are sure that person is someone that you want to be with." So in essence, if she finds out I got a girls number or that I have been flirting or talking with another girl I can say that we are not yet exclusive.
My situation is ideal, because she walked right into it, but this is the key.
Compliments of Baron.
Tell a girl "I really like you, but I am in date mode right now. So I am going to be seeing other girls."
I like to say "I am not looking to get exclusive right away. I really like you, so I want to see where this is going, but I am still going to be seeing other people."
Two great ways to keep your options open, and keep your current target.
This is the key to having multiple LTR's, which is exactly what I am looking to do at the moment.
Thanks again Baron, and I intend to continue using this strategy. You need to coin this as "Baron's LTR gambit" or something to that effect.
-Tropics