They'll become clingy if you let them. I have fucked several virgins before. If they cry after the fuck just let them. Don't try to comfort them or justify to her why she shouldn't feel bad.
The clingy ones that you'll fuck are NOT the virgins. These will be girls who have boyfriends or husbands who can't give them orgasms. If you're able to give her many orgasms while her boyfriend can't even give her one, she'll be clingy as thick mozarella cheese on a pizza.
Give a woman the gift of multiple orgasms, virgin or not. You'll only learn how to handle clingy girls by getting involved with a couple or several more. Reading just gives you an idea on how but getting real life experience makes you actually deal with it with the right level of skill.

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Approach. Open. Escalate. Isolate
Here are my two essential rules on texting that will save you tons of time and money:
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