Scenario from Television

You and your fiance have dated for 6 years.

He has a group of boys.

They get together pretty regularly and get pissy drunk.

Since you're planning a wedding, etc.  your fiance goes out with them much less. (Not every.single.weekend anymore.)

They hold and intervention with him and tell him that you're not good for him and he shouldn't marry you because you're a fun killer.

He stops doing stuff with them and you ask why and he tells you.

How do you handle?