She surprised me today

Wife and I have been talking about different things for a while. Shes self conscious and is trying to build up her confidence. I love that. Out of nowhere today she says she installed Tinder and showed me how many guys she matched with. Im not really sure how I feel about it, certainly caught me off guard. She wouldn't let me put her Pic on any of the swinger sites were on....but today shes on Tinder. Just kinda threw me.