One invite too many

About a month ago I received a bridal shower invitation to a bridal shower I was hoping I would not have to attend.  The reason for this is because my connection is to the groom not the bride. Therefore, my level of excitement is non- existent.

I contemplated just not attending and sending a gift card instead however; I would feel   really guilty if I did this course of action.  The second biggest
problem I have with attending this shower is that I am going to be surrounded by strangers and only a few people I am familiar with.  I do not enjoy being placed in an environment that makes me uncomfortable unless it is necessary.  This situation is unnecessary.   For this one time I am going to just “buck
it up” and make the best of the party.  I know it will make the bride happy and I would want some “stranger” to do this for me.