Ava. Temptations Book Club, #2

Ava knows her husband Cal is 99% perfect. Smart, kind, generous, devoted - he has almost every good quality any woman could ask for. And that 1% of him that's imperfect? It's not his fault but a problem of anatomy. She knew before they were married that he had primary impotence. She married him willingly, and she knew what she was getting into. Despite that 1% imperfection, Cal has always seen to it that they have good marital relations.
He has a strong libido and a great imagination, and her pleasure is his pleasure. So when she reads him a passage from the naughty novel her book club is sharing, he's on full alert to the possibilities. The spicy scene she reads is about a woman making love to one man while another man watches. This gives Cal ideas. He could watch her with another man, one who could give Ava the kind of loving Cal can't provide.
On a trip to Vegas, they make friends with a local man. He's darkly handsome, charming, knowledgeable, and completely smitten with Ava. Ava is a good wife, though, and she would never cheat on her husband. But it isn't cheating if Cal arranges the encounter and if he's in the room, watching every moment..