20% of men have had only 1 sex partner during their lives to date.
Is there a particular number you want? Although it's not something anyone can generally answer (if you're looking for a solid relationship), you do owe it to yourself to not jump into a relationship with the first woman you sleep with. It's like sampling from the buffet before deciding on a dish you particular enjoy and want to label as a "favorite".
So, how are you going to achieve your goal? You'll want to get comfortable talking to women, and good at seducing women. After all, when the "right one" comes along, you'll want to be good with women so you can keep her interested & aroused.
Learn more at SeductionEbooks.com - lots of free PDF ebooks, videos and MP3 podcasts!