Ps- I read your post a 3rd time, but couldn't edit as it timed out.
As you stated, you want to be her Lighthouse. And she sees you as separated, free to do your own thing. (Your W is under the same roof, but out of your room). Well, again, in my opinion, if you're wanting to be her Lighthouse, I'd keep the ring on to show her that you are there for her; it's a symbol. And again, in my opinion, take care of your own sexual needs. You don’t need to complicate the situation by turning the lights off in the lighthouse. Even if she says, do as you like, sounds like she's giving herself permission to step away from the Lighthouse and get in the water. You following me? What have you done for yourself to be the best version of you? Concentrate on that. Being physical, working out, will help release some tension. And, you can still be the Lighthouse. Stay on track.
The night my H did his BD, I took my band off, when he wasn't looking. We had sex that night, in the morning he said, "I don't want to lose you". I had him put my band back on my finger, as a symbol. Later that night he said, I haven't changed how I feel (unhappy)... more bombs basically. But I kept my ring on because I have chosen to stand up to this "challenge" in my life. I want to be his Lighthouse. He knows where I stand.
Keep posting.
~Never Give Up ~ 2019 Mar BD June BD Dec Aow/xgf 2020 Jan he wants D Feb he flys2 ow Mar returns stuck here C19 Lckdwn Apr he leaves for work until Nov Oct D FINAL 2020 Living MY Happiest Life Ever