Assistance needed?

I've been with my current partner (28M) for nearly four years, and I recently found out that he has been cheating on me since the beginning. He hasn’t been physical with anyone, but he’s used apps like Badoo and Badoo. The latest incident occurred in December 2023, and he insists he hasn’t done anything since then. He just joined the Air Force, and we're currently in a long-distance relationship. He keeps telling me that he’s a changed man. We share an email account, and I stumbled upon Google My Activity, which tracks the websites and apps he has accessed. To my shock, less than 24 hours after he got his phone, he was already on Tinder, Badoo, and other dating apps. I confronted him with screenshots, but he claims he connected to faulty Wi-Fi on base and that it must be a virus, insisting that he didn’t visit those sites. However, all other activity clearly shows it was him. I know he’s lying. I’m trying to figure out how to bring this up again when I see him in two weeks. Please don’t judge; we’ve all been in difficult relationships that are tough to leave. Thanks for any advice.