I think the lung rooms are a spiral shape, the bridges just serve as shortcuts to get into the main room. If you keep rotating around it in the right direction eventually you'll find a permanent entrance deeper inside.
Also, I found out the hard way that walking a mech on the bridges also makes it collapse, haha
Also also, using about half of an autocannon mech's ammo is enough to kill the lung, no hellbomb backpack required ^^ (Even heavy armor pen damages it, so you can kill it with enough firepower from plenty of different weapons)
That's good to know that you can blow it up from inside the water though! I'm sure it'll be useful to know, and I'll test it by pressing the button on a friend's backpack and kicking them in...
What you're describing is very similar to how I feel, and I describe myself as sex-favorable grey-ace. I feel some sort of sexual or sexual-adjacent attraction, and don't mind sex with my partner since it can be fun and feels good for both of us. but I'd be 100% okay with never having sex again, and I have no desire for it other than when my partner is in the mood.
but xxce2AAb (other commenter) is spot on. labels are nice because they help you find community and describe your experiences in ways that are healthy instead of "weird" or "broken", but they're not necessary to fit into and are entirely a personal decision of what labels you feel like describes you best, or whether you bother using labels at all ^^
you're just you, and that's awesome