A quick note on formatting your survey: Bullet points are tough for both you and the person answering. Hard to keep the questions straight. You might want to swap those to numbers. Now to get into the meat of it:
1. Foreplay is different for different people. Some consider buying dinner a form of foreplay, others it needs to be strictly sexual in nature. It's blurry for me, sometimes I've stumbled into it and not realized I've been engaging in foreplay for hours with my partner (other night is a good example. We had been playing Baldur's Gate 3 which led to a long conversation about what was a good sexual story. I started to give her a massage to help her sleep and it was only when she let out a little moan did I realized it was going somewhere).
2. As long as needed is a great answer. Every couple/situation is different. The blurry lines of what is flirting, foreplay, or just being an attentive partner is hard to peg down.
3. Again, hard to distinguish this. I've had conversations I felt were more sexual in nature than penetrative intercourse. Occasionally when my partner was disconnected it felt like I was using her body, like masturbating into someone. It wasn't a good feeling and that's no longer a problem after a lot of communication. To me, sex is an emotional and tantric connection to another. Hard to say where it starts and stops.
4. See number 2. Had 4-minute quickies and 10-hour marathon sessions.
5. See number 3. In the last 10 times I've considered it sex, I think I've only had intercourse twice. Honestly, those were probably the bottom two of that batch. It was more medicinal than strictly sexual, relieved pain for partner. Happy to help, still felt connected, but wasn't the full-on tantric experience that I had in our other encounters.
6. I've been disappointed with sexual intercourse where we've had penetrative sex and I've physically cum. I want my partner engaged and enjoy the experience. I now realize I don't really like it otherwise. I feel, gross I guess. I really and truly love my partner and I don't like using her as an object.
7. Partner getting off. Her orgasms feel like they go through my body like waves of energy. In the extreme afterwards (like right after we're done) I sometimes shake so hard that my legs give out when I head back to bed. After lying down a bit I have so much energy and get so much stuff done. Don't get me wrong, cumming is great. I enjoy that too. But my partner is the real show.
8. Almost always, actually I prefer she gets off first. I'm easy, when she wants me done I'll be done in minutes, seconds if she worked me up. To keep up that sexual energy I try and make my orgasm the last thing that happens if at all. That being said a few times she's done things strictly for my pleasure too. Depending on how it's done I really enjoy it being about me sometimes too. I like it when it's like an act of love and kindness, not out of obligation.
I'm a bi male, 39. Didn't realize I was bi till only a few years ago and haven't had any sexual encounters with men as I'm in a relationship. It's technically an open relationship but neither of us has explored that really.