Finally going to say something! Any last minute advice, please?

Okay, so I made a topic back here a few months ago describing my confusing situation. Since then, quite a bit of other stuff has happened, and I think I've truly come to terms with myself on a personal level about who I am. Naturally, I've decided that I'm going to start to tell people after all these years, and where possible, to do it face to face so as to be more legitimate.

I'm going to meet up with a good friend tomorrow for lunch, and I've decided that I'm going to talk to her about my sexuality. However, I'm unsure over how to exactly phrase it. We've got loads to talk about anyway, so part of me thinks I should casually drop it in amongst the agenda so as to not let it dominate. However, part of me thinks that is a big life decision I'm making and that it should be treated as a centre piece for discussion as opposed to talking about a recent trip to London.

There is also something I think may be a slight issue as well. When I was still "straight" a few months ago, I sorta asked her to set me up on a date with one of her friends. Fortunately I could play the busy card by the time when she said that she'd found someone (and believe me, I was busy at the time anyway), which let it fall to the wayside. Part of me thinks it was no big deal anyway (unless my friend's friend had seen a photo of me and fell instantly in love), but part of me thinks that my behaviour could have come across as a bit selfish, which may piss her off.

Maybe I'm overthinking things, but in any case, has anyone got any bits of advice they could give me? Thanks in advance. :icon_bigg