<human>: I am bi. I have been very sure of my bisexuality for many many years and came out as bisexual at 15. 

I've always been very sure and very comfortable with my bisexuality and while my primary attraction will ebb and flow between male and female from time to time, I've always still been attracted on a base level to both male and female. 

However, lately (within the last 2 and a half weeks) I've been noticing that being with a man, or even the thought of being with a man has been rather uncomfortable and at times almost repulsive. I've never had such a strong hang up about either gender before, so how strongly I'm feeling about this has sort of blindsided me.

My boyfriend is a wonderful guy who treats me right and is everything I've been looking for in a partner, but I'm having trouble connecting to him and feeling attracted to him simply because he is a man, and lately I'm finding that I just don't feel even remotely attracted to men. 

How do I talk to him about this? How do I explain that I'm not a lesbian, I am bisexual, but I just don't feel attracted to men right now? 

I feel like the conversation will either turn into him thinking I'm singling him out(just not interested in HIM) or him thinking I'm actually not into men at all and I was using him. (neither is true, I'm just not into men at the moment, but I thought I still was when we first started dating)

Honestly I'm at a loss here and I don't know how to handle this or explain it properly as this whole ordeal completely blindsided me, and as mentioned before, I've never had such a strong aversion to one gender before. 

Help. Just help. I don't know how to approach this conversation.

Give me a shortened version of the text
<bot>: Bi [23F] Dating a guy [25M], and find men repulsive right now. Don't know how to explain to my guy that it's actually not him, it's just me.