<human>: Can you provide a brief overview of the text?

Should go without saying, this is a throwaway account.

So my gf of 11 months, Lauren, doesn't know I'm bi. Our relationship is serious and I'm crazy about her, have been since we met. I feel like she's the best thing in my life because I feel like she makes me a better and stronger person. I could talk all day about her obv. I want to put a ring on it and have kids with this girl. We are both at university (in NZ), we met here. We've been talking for awhile about finding a flat and moving in together.

Earlier in the week, something very intense happened to me. I got involved in a long argument a mutual lesbian friend of ours (Alison) was having about same sex marriage. This was on the uni grounds with some anti-gay religious people. After this we were at her place having some drinks and talking about the argument. Somehow talking about my own religious background (now atheist) suddenly turned into me admitting to her and myself at the same time that I was bisexual. I never acknowledge it before then and I've been reeling from the realisation since.

I have to tell Lauren about this and I have already tried but so far I've just chickened out. I just don't know how best to go about this. She's always been vocally supportive of lgbt people (we have gay friends) but she's never dated anyone who isn't a straight male. Also I do think I want to explore this gay side of me, or at least there is an interest there. I have a couple crushes on guys I know and when I think about them I do feel an intense longing for being... *physical* with them. But of course, I'm very romantically attached to Lauren and during sex with her I feel very straight (I've almost never imagined a guy in her place during). Would laying all the cards out at once be too much? What should I keep in mind when talking to her? Have any of you been in this situation?
<bot>: Realise I'm bisexual while in a LTR. Not sure what I ultimately want. Not sure how to proceed in talking to her about this.