Dudes on here expecting for women to just vanish from the dating pool if they ever had more than one partner. I feel like they don't realize that they could be that future ex themselves. A lot of times people just aren't compatible, life circumstances get in the way (having to move), they fall out of love for minor reasons, etc. Not every woman (I'd say most, even) is thinking of all her previous partners when with you, you're not being compared. If she is comparing you to her exes it's because she's unhappy with the relationship, and if that's the case; that's just life, it sucks but it happens.

A girl with no dating experience will probably be very immature, jealous and closed off, because she never made these mistakes to learn from in the first place. It's just not going to be a good time. Very rarely people will start dating when young and then never separate, having exes is not a red flag. Of course there's people that will jump from relationship to relationship in a very short period of time, that's a red flag, but you'll probably know before you ever commit (not necessarily by direct admission, but you can usually tell). Don't put your dick in crazy always applies. Fortunately, most girls aren't crazy.

If you avoid relationships because you're waiting for the perfect person you're most likely never going to find them. Sometimes the "perfect person" isn't ready-made, they're developed throughout the relationship. Some guys think their wife's are literally the perfect person for them, but they most likely didn't think that at the start of the relationship. The more quality time you spend together, the better that person gets in your eyes, you're never going to get that if you avoid relationships entirely.