but what will i wear?

yesterday i was offered a very random and out of the blue excursion for this long weekend
my good-friends-sister-in-law (got that?) texted me to invite me to west ed for the weekend with her and two guy friends. i immediatley asked two questions, and i thnk you will agree that they were the most important questions that could possibly have been asked:

who are your guy friends?

and are we going to the water park?

the answer to the first was two names i dont know, the answer to the second was "YES!" which basically made my decision for me. obviously.
the random part of this whole thing is that said good-friends-sister-in-law and i are not particularly close, we are friendly, but i wouldn't say we are friends. we have only spent a minimal amount of time together and only in group settings with the whole family around. (including my fake secret boyfriend, who i am not doing a very good job of letting go of)
i have come up with a few possible explainations:

she has run out of real friends and been forced to choose from the b-list

my good-friend feels sorry for me and my current lack of a life and suggested she invite me

or

she needed a single girl for the friend of the guy she likes

i can't say that i really care all that much, i need to get out of the house and i need to start breaking away from my comfort zone of friends - all three of them- and start having a real life so this is as good a place as any to start.

also, i fucking love water parks.