My female friend likes me...

Crystal • I need friends... 😂😂

So my friend Danielle has feelings for me. Yes, I’m bisexual but I don’t have feelings for her... any advice for letting her down gently, without hurting her pride? She is currently questioning her sexuality so hard right now, and I don’t want to ruin our friendship... we’ve been friends for a VERY long time and she’s the best friend I’ve ever had...