I'm so sorry you're feeling this way I could cry for you! I will share some things that have helped me out these past three weeks (my son had a vs, then my 22 month old daughter..all over me multiple multiple times, then my husband, they are better since yesterday.)

So kissing him goodbye isn't a worry since he hadn't v yet. No worries there! I still haven't gotten sick and I've been covered in d and v these last few days hope that's not too graphic for you. I attribute this to taking probiotics, getting rest (through taking Benadryl at night,) staying hydrated, and perhaps my emet stomach. If you can get some probiotics for both of you (when he can keep them down) that would be great.

You could also stop at the store on your way home and get some disposable gloves, a mask, and some bleach (an awesome bleach alternative that supposedly kills noro is Lysol with Hydrogen Peroxide.) trash bags and the like. For your peace of mind. You could also get a small trash can or container and line it with bags to set beside your boyfriend in the bed. Maybe he will be able to make it in the can? wash your hands well and keep them out of your mouth. Maybe sleep on the couch or even consider staying with someone else for a while.

all of that won't help you recover, though I'm not sure that's what you're really looking for right now. It's pretty much "feeding" the fear to go to all those lengths. But if you are wanting to try and stick it out, or face the fear (very scary but easier with time and a good support system,) I would suggest you try to accept that it may happen to you as well. Then just practice "normal" hygiene and try to stay as calm as you can. Know that you're not really in danger, even though it very much feels like it. I wish I could give you a big hug and tell you it's going to be ok. No matter what, you'll be ok. This will pass.

My therapist has suggested a couple of things that have helped and if you're interested I can share them with you. I am so sorry that you are feeling this way. It's hard and lonely but you can get through this time! And for some extra reassurance, not only am I right there in this with you, but I have been overly exposed (and I'm pregnant so my immune system stinks) and I have stayed healthy. There is a chance that you won't get it! Pm me if you need to talk.