Caught my boyfriend on Tinder, what to do?

Anonymous
So I found out my bf was on Tinder via his text messages and asked him about it. He doesn't know that's how I found out but in one of his texts he said he was just "window shopping" to a friend. I asked him whether he had one and he told me he did but that he didn't use it. I didn't tell him I knew he had been on it recently. I just asked him to erase it from his phone which he did. Well, I just found out that's not how you get rid of Tinder. You have to delete your account within it. So, should I ask him to completely delete his account or should I test to see if he's using it and make a fake one? I also want to ask to see his profile and messages if I do ask him to just completely delete it. Thoughts?
Updates
+1 y
Sorry, I meant that he text a "girl friend" that asked him what he was doing on there and his response was that he was "just window shopping". I say that loosely because in his text to his "girl friend" he seemed pretty flirty with her. Something I didn't confront him about because to me at the time it seemed like he was doing it in a joking manner. But now I want to kind of bring that up. Even if its been a week since that happened.
Caught my boyfriend on Tinder, what to do?
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