Just recently I was told about an extended family member, faded for years, dad an elder. Dad found out about worldly boyfriend so calls the elders and sets up a meeting for them and his daughter. Daughter DFd. Dad keeps his "humble service" position of elder daughter now shunned.
Every which way you look at it, shunning is the result.
If you have met your man's parents I would recommend talking to them and making them understand your situation.