I might even do the gucci thing, and say "I'm sure we'll still see each other once in a while", but then never be available to her.
You don't even have tell her anything ... just go dark ... be busy .... except for the kids where you will always be available ... no invitations to WAW for fun family outings .... no flirting .... nothing, nada. Be Mr. Ice, Mr. Seeya later, or not. I think she has to decide now, or never. Maybe she needs to see the other side of a D, what it's truly like, and maybe you and her may fall in love again later.
I'm hoping for that with my H 'cause we are not into each other now. Who knows?
Me:57 H:52 M:28 Got another lawyer last year and filed. D35,S/D twins28,D22 EA4/04 End? Who knows? "Life is like a mirror. Smile at it and it smiles back at you." — Peace Pilgrim