Hi,
That's a lot for one comment!
Let's address those questions individually:
1. If your affections is high enough you get to get the bj and sex in shower (bathroom scene), it's the only one you can get mainly because.......there are no other scenes in the game yet....it's barely v0.3
2. If I understood correctly, you managed to figure out yourself what the lubricant is used for..(if not then it's for the camera upgrade to retain relationship level after loop reset)
3. There's no countryside map available yet, it'll be available in upcoming public release, no you're not tripping, you're playing an unfinished game....
4. Yes, each heart represent 10 affection, so 60 affection = 6 hearts etc.; as for the suspicion part - any of the daylight events (bathroom scene, picking lock, groping boobs in front of TV etc.) have nothing to do with suspicion mechanic - this is solely night time gimmick, if you end the night (or it ends by itself) and you leave Yuna: naked/covered in cum/let 4-eyes see her naked or any combination of those three flags above, she becomes suspicious if you - she won't accept any items or accessories except gift and you're locked out of the bathroom scene, now to revert her state you need to either wait few nights (some say it's 5, others 6) or wait for the loop to reset.
5. To get the lvl 80 scene, the main requirement, aside from me having 8 hearts, is that it needs to be implemented in the game...duh, as I said before, the things you see on screens in other posts on itch are just previews of upcoming events (they are available though if you get the paid version, but dw, all those will be in the public one as well)
6. Currently there's only just the beginning of countryside to tell players what he next location will be, it will be added in the next update.
Hope this answers all your concerns (one point for each paragraph of yours),
Cheers