I've just got to say that their affair was anything but "love." It was attraction for sure, most likely mixed in w/some lust, but it wasn't anywhere near "love."
No, your H didn't love her. He may have been swept up and feeling euphoric, but he didn't love her.
Most A's are not about "love" but about the attraction, the lust, the danger of being caught, and the excitement of something new. Words are said, especially in an A, but the actions bear out in your H's favor that he wasn't in love w/her, but instead in "lust" and really attracted to her.
