That’s true to some extent. Any stretching will return to nominal state in fairly short order, and tears certainly heal. However it never goes back to it’s “pretorn” state, and I wouldn’t think anyone would want it to, a lot of hymens don’t allow significant penetration of foreign objects (or body parts) in their original states. The article I linked has more details on that in a few different sections.
It’s my understanding that some of them even heal and can be torn again
That’s true to some extent. Any stretching will return to nominal state in fairly short order, and tears certainly heal. However it never goes back to it’s “pretorn” state, and I wouldn’t think anyone would want it to, a lot of hymens don’t allow significant penetration of foreign objects (or body parts) in their original states. The article I linked has more details on that in a few different sections.
My gf bled the first 5 or 6 times we had sex. It definitely heals.