Scripts for invitation to masturbate

I’m a bit embarrassed to ask this, but I need help with some scripts/ the right words to say here.

I’m higher libido than my wife, and often take some ‘alone time’ for myself in our spare bedroom when she is tired, stressed, seems not interested in intercourse, etc. I’d like some advice on how best to extend a low-stakes invitation to join in, in any capacity.

What I want to express is: I’m in need of an orgasm and I’d love to have company. Want to kiss while I do it? Snuggle? Watch? Help? Join in? Or if you just aren’t into it that’s cool too.

Usually I’ll say something like “Hey, uh, I’m gonna take some time in the Guest Room for a bit after we get the kids to bed…” but I guess I just don’t know how to turn that into an invitation.

Secondarily, another script I need help with is normalizing this out of the guest room: I’m in need of an orgasm tonight, is it cool if I masturbate in here [out room] or do you want me to go to the guest room? And are you interested in joining in any way?

The way I’ve written above just feels too direct and uncomfortable for me. Suggested ways to try phrasing these questions appreciated!