Dear Louise: 'This is the first girl I've liked so it's all new to me'

I have fallen for one of my friends and I am extremely confused! This is the first girl I’ve liked so it’s all new for me, and it’s the same for her.

She has expressed that she feels the same way but only when she’s drunk.  My boyfriend has been incredibly supportive and accepting of my bisexuality, and knows I’m happy and committed to our relationship.