Found Bumble on my Fiancé's Phone

I read a story about a woman who finds Bumble on her future husbands phone. Naturally she is confused on how to proceed after this discovery. It isn't a great look to have a dating app on your phone if you are with someone, but the times they are a chang'in. In story 2 the girl tells her boyfriend that she has been cheating. While being honest is good, cheating is not, so it doesn't just wash out in that one. Let me know what you think down below.