SHIPPING DAYS WITH SILL CIPHER!

Another A/N (Sorry, you don't have to read this one)

I found out I'm bi.
How?
It's complicated...
I have a crush on my best friend.
Don't worry ThatoneFanishGirl
It's not you.
Anyways...
This friend told me she was straight.
But I'm not sure I believe her.
I have reasons as well.

REASONS:
So, sometimes my friends and I do Gravity Falls role plays.
On this particular day, one of my other friends
Was role playing as Mabel.
I of course was Dip Dop.
And my Senpai was Bill.
Normally BillDip was never cannon in our rp's
But Bill was acting weird.
She started asking shooting star if she wanted her to teleport us to a place where BillDip was cannon.
I was utterly confused and very flustered.
This never happens.
Anyways Mabel and Bill were soon fighting over me.
At one point Mabel yelled, "He's my brother, not your boyfriend!"
And pulled me towards her cause Bill and her were practically playing tug of war with me.
After she yelled that, Bill yelled,"Yes he is!"
Remember, my Senpai, who said she was straight, said that as we were role playing.
At this point I was smiling and blushing and laughing.
Please send help...:
I told my friends I have my first crush.
(Yes! This is my first crush!)
My friend who was role playing as Mabel keeps begging for me to tell her.
But I'm not.
Anywho...
How does this crush thing work?
Should I confess to Senpai that I like her?
I don't want to ruin a perfectly good best friendship...
But I've always hated the idea of love.
And now I hate it even more.
Please help me!

~Yours truly
Author~Sama