When My Wife Drinks

My wife really becomes horny when she drinks, she also is extremely flirty. She doesn’t drink very often because of this and wants me to stay somewhat sober if she drinks. She always tells me she doesn’t want to fuck anyone else but when she drinks she always ends up focused on one guy as the night evolves. She has been fingered by a friend as the made out in the shrubs in a back yard at a party. I walked right up on them, if I hadn’t I’m sure they would have fucked right there. She doesn’t think it’s so bad, it was just our friend she told me. She pouted when I insisted we leave and on the drive she got angry telling me his dick was a lot bigger than mine. I hadn’t seen her groping him but he is a good bit bigger than me.
The following day I thought all would just be forgotten but it wasn’t. She was quite all day before telling me she has already fucked my friend and they want to continue with my blessing.