Quick Supportive, Consenting and Experienced GF Fantasy I had!

Here’s my random Fantasy Fic idea!!

I’m into the supportive relationship fantasy!!! It’s of a experienced GF/Wife/or S*s finally coming out to her BF/Husband/B*o about 🐾 and after hearing the good news she’s super happy he’s fine with it!!
She lets him know that since it’s ok with him she’s always hoped and wanted them both to enjoy being knotted.
So eventually She asks if he’s really interested (because it’s anal of course) but She will be ecstatic if the BF wants to really give it a good try at getting knotted!! (as well as a couple of more times after when they are ready again) to be sure if her BF likes it or not and hopes to help convince him 😁🙃.

In the fic she’s experienced so after he says he will try it she lets him know that she’s gunna help them smoothly mount/tie up so the anal when he’s taking it from their boy and eventual knotting for her BF isn’t too bad and works out. Basically to help them try and have a good experience being anally knotted for him and the 🐾 in this fantasy.