Ο παρθενικός υμένας μπορεί να σπάσει από διάφορες δραστηριότητες όπως απο κάποιο άθλημα, αυνανισμό , ταμπον κλπ που σημαίνει ότι όντως υπάρχει το ενδεχόμενο το παιδί να μήν βιάστηκε
"The hymen is a thin piece of skin that partially covers the entrance to the vagina. For some women, it may stretch or tear when they start having sex.
Having a stretched or torn hymen does not necessarily mean a woman has lost her virginity.
The hymen can also stretch or tear quite easily before a woman has sex for the first time, through:
activities such as horse riding and other sports
using tampons
masturbation
A woman may not know her hymen has stretched or torn, because it does not always cause pain or noticeable bleeding"
Πηγή NHS