<human>: Hypothetical: How long into a relationship should there be only one woman?

I generally use a rule of 3-5 dates / sex, whichever comes later; the idea being if I'm willing to stick it out 5 dates or I'd wait more than 5 dates for the girl to have sex, we're entering a relationship and I'm no longer allowed to take any other girls to dinner. If I get to 5 dates and I don't feel a connection, I end it.

I'm currently in a precarious situation where I've been on two dates with one girl (not even a kiss yet), a date with another (she wants a second), and another girl just asked me to dinner (I have the philosophy all people deserve a first date if they have the courage to ask). #FirstWorldProblems

I don't want to be a douche but I also don't want to start looking for reasons to get out of dates that, quite honestly, were a blast. I also don't want to be a womanizer or a cheater.

Opinions?

Can you succinctly summarize the text in 1-3 sentences?
<bot>: My life is going well and I'm complaining about first world problem decisions like I'm in high school. But this kind of thing didn't happen to me in high school.