Some questions from a semi-experienced user

Hello all,

I've been using Aneros products for several years now, about 3 or 4 I think. Although I can't say for sure, it seems like for the most part, every new session seems better than the last (when I'm properly excited at least). There have been a lot of times where I would have extremely pleasurable feelings, my prostate seems to ''heat up'' and even expand to the point where it seems to ''fill'' the major part of my rectum. However, I also feel like there should be more. Sometimes, but this has only happened recently, it feels like I'm really close to ejaculating from dildo stimulation (pretty thick 10 inch dildo). This has also been my goal, which comes from the feeling that there should be more.

My main question is if I'm going about it the right way. Right now, ejaculation from dildo/aneros stimulation is what I want to achieve. This however goes with a more active body while in a session. Like going up and down a dildo, clenching my PC and trying to have tension in more muscles as to ''force'' ejaculation. All this without using my hands of course.

The second question, is about the relation between orgasm and ejaculation. I have a small feeling that I already had Super O's, as some times the pleasure is so good it's almost like I'm out of this world. However, there never is any significant pre-cum or actual cum via ejaculation/flow. So the question here is if the users here who have Super O's also ejaculate or ''flow'' semen without manual stim during the Super O, and if they think this is important or not.

Besides these I have some small technique questions. For instance, I really enjoy manually stimulating my prostate with my thumb, as it applies the most pressure. However, I can't seem to ejaculate from this even though I get to a level where I know this is possible. Does anyone have experiences with this, and do you have tips for getting over the top?

Nipples. I really enjoy stimulating them with my hands, but it feels like I lose concentration from it. So the question here is, how do you guys do nipple stimulation? Which hand goes to which nipple, do you tug it, stroke it, etc.?

Finally, I've been (really slowly) introducing my girlfriend to the whole thing. It started with her licking my perineum (the day I shaved it as well as my bottom completely). Even though it was her idea doing this, I think maybe she got the hint of it being shaved. As this got my extremely excited (felt almost like an aneros session) I told her she could put her tongue a little further down, which she did. A little later she jerked me off while also stimulating my anus with her other hand. When she put a finger inside however, her nails hurt me and I made her back down a little. I would really like us to get into this more, but it feels like a little too much to downright ask her to trim her nails and try again. Any tips (or stories) how you guys implemented this whole thing into your relationship?

Well I hope my questions are clear, thanks in advance for anwsering them!