Trait: Sexual Abstinence
Sexual abstinence or sexual restraint is the practice of refraining from some or all aspects of sexual activity for medical, psychological, legal, social, financial, philosophical, moral, or religious reasons.
Use the trait both for voluntary and forced abstinence, where it is clearly expressed that the character is refraining from sexual intercourse due to his own wish or due to being forced by another character.
In order to prevent misapplication, don't apply the trait to virginal characters, unless they clearly express that they do not intend to have sex until marriage, or something similar.
Refraining from Sex