If your sex drive is high and hers is low, that will probably represent continual frustration. It would be good to know her age. Yet sex should be a part of life throughout the life cycle, so I would want to have a discussion with her about when she is interested and why she might not feel interested. If she is not interested, there aren't any tricks to get her interested. You need to ask her if she thinks you are a good lover.
Virginity is both a physical condition and a state of mind.
A strict definition is, if he was inside, then you were deflowered. However, some Saudi Arabian women who were educated in the US and then returned to Saudi Arabia have their hymens reconstructed so they become virgins again. If you are having regrets about it, then you should give it some thought or talk to a therapist. For the same reasons men use it as a tool, because it works. You can get goods and services out of it.