We hope he will get married, but not by hiding it. If you know someone with such a problem please do not keep it a secret (from the appropriate parties). You rightfully feel sorry for him, but tying up an unsuspecting person and shattering her dreams and life, is not a better option. Let’s Daven that he should find his Bashert and have a full Yeshua.
I won’t judge his parents. They are desperate, and are blinded by their worry for their child. However, I don’t know how such people face their children-in-law, their victims.