I'm holding a grudge over being passed over for the bridal party of a longtime friend
So you are mad over not being invited to the bridal party of your longtime friend? What is she up to now?
They are on tour in Europe right now, they play her music there.
While it's understandable that you are disappointed and upset at being passed over for your friend's bridal party, it isn't appropriate to hold on to a grudge because of it. Holding onto grudges just ends up consuming you and making your emotional health worse over time
I don't care even a little bit. I'm never inviting her to anything else again.
It sounds like you do care and you don't want to come to terms with it, which is understandable, it hurts to be excluded! But, being the bigger person is an even better feeling than losing out on a friendship over a grudge.