So FI's bachlor party is in a couple days and I am super excited for him. Though, he keeps telling me he would rather me go as well, we do everything together always have, we just have fun. I want him to go and have a good time and enjoy himself, and I hve told him so numerous times. Everytime I tell him to just go out with the guys have fun he tells me it won't be fun without me

. He tried telling BM he won't go unless I can, BM says no its your bachlor party she had hers.
So how do I convince FI he will have a great time without me? or what would you do in a situation like this?