I hear it said often that if you were ever to LTR a girl, wait until she's finished with the cock carrousel so she can "get it out of her system". While this seems like a logical argument, this is pretty terrible advice.
The fact of the matter is that there is a direct correlation between a woman's sexual past and your likelihood of a successful marriage/LTR. Let's take a look at NSFG's data (linked above).
The very highest chance at a successful marriage, using sexual history alone, is to have a virgin bridge. The second highest? One previous sexual partner pre-marriage, being you. Third? One pre-marriage, with someone else.
Not so bad, right? But take a look at the data. That's a huge jump. 15% to 50%.
And it just gets worse from there
I'm not going to tell you how to live your life, but if you wish to one day have some sort of LTR, this information is crucial. You cannot expect a woman who's been on the carrousel to not want to go back. Your highest chance for success is to go full "no hymen no diamond". Alternatively, take the popular red pill route, fuck bitches and disregard LTRs.
Either way, don't settle for a half-measure.