Not all virgins bleed. Some women bleed because they are not lubricated enough or because their cervix is bruised, which has nothing to do with a hymen.
The hymen is a stretchable excess of skin at the vaginal entrance that exists to different extents and in different shapes in different women. Some hymens “break”, others do not. Some “break” while doing gymnastics, riding a horse, or doing other physical activities. Some never do, even with years of vigorous sexual activity. Some women have nothing to “break”.
The tissue that forms the hymen could rip once, causing blood to appear. It could also rip again, under the right circumstances. Or it could not rip at all.
This is different from what I wrote first. Sexual arousal is a process that prepares the vagina for sexual activity. Without adequate arousal, the vagina is dry and prone to tears.
Women also bleed because of their menstrual cycle and cervix.
None of these things are unique to “virginity”.
Have you received any education about sexuality and female anatomy?