Virgo's natural role as the control freak of the relationship definitely extends to the bedroom, too. While casual Pisces doesn't usually mind being submissive in the sack, it's definitely a concern that Virgo has to be in charge of every single area of the relationship. Obviously, this makes Pisces feel uneasy, and things just get worse from there.
As two natural caretakers, Virgo and Pisces are very willing to compromise and sacrifice what they really want for the sake of their partner. This often means that they're both living a life that is not what they really want. It's not uncommon for one side to simply stay in the relationship as a form of compromise. They could definitely be stuck in this partnership longer than necessary if someone doesn't speak up. Best to get out before it's too late.