Friend's Boyfriend on Tinder

Kaitlin • "It does not do to dwell on dreams and forget to live." ✨

I'm in a bit of a predicament. I was scrolling on tinder and came across my old co-worker's boyfriend. Her and I used to be a lot closer a few years back but we went our separate ways because she left our work. We haven't talked in a year or two but as I said, I found that her boyfriend has a tinder profile. I took a screenshot so I have proof. So, do I reach out to her and tell her? Or just mind my own business?