It is not a game to make her jealous. It is a completely legitimate way to let her see that her husband is valuable in the eyes of others. It would give her a touch of reality. If she reacts with jealousy, it is fine, but is not necessary. The necessary part is to let her see her partner through another prism, which is something she has been unable to do, and telling her that her husbands loves her STILL does not enable her to look at her partner through another prism - it just regurgitates something she already KNOWS but does not VALUE. So it is literally an exercise in opening her eyes - nothing dishonest about that.