Yes, so I have heard. That is why I am so committed to attaining that Union within myself. You must get involved and become vulnerable to pain, like Mother Mary, in order to taste this ecstasy. I requires courage, but fear is giving way to Truth. So, orgasm is sort of like pleasure and pain united.
Music says it best.
Yes, It all happens in The Heart. That is why I recommend doing The Rosary . Then the Rosary is for you. Beside that, you can add, remove or change the prayers as you are directed. The purpose is to use the beads as a talisman for sending Light streaming into the Heart Center.