Husband hiding things from me

So a few months ago I found a vape that my husband bought and I got pretty upset about it. He never smoked cigarettes so I was explaining to him why get a vape and create a horrible addiction to it. We got into a fight over it, he didn’t throw it out, but I figured once he finished it that was the end of that.

Then 2 days ago he walks past me after coming out of the bathroom and I could smell like something fruity so I was like did you just vape? And he says no. So I jokingly pat one of his pockets and he gets all jumpy and I’m like what’s in the other pocket and he just says “nothing”. So I go into the bathroom and I’m like it literally smells like a vape in here. So I close the door to use the bathroom and he immediately comes to the door and says “I’m lying. I did vape” he tried to talk to me about it but honestly I was just in a rush to go to a class so I just said I don’t have time for this right now. We both ended up being busy the rest of the day and the following day I had work until late. I had the whole day basically to think about and I came to the conclusion that I know he’s in a lot of stress right now so if he feels like this stupid vape is gonna help him then whatever. So after work we start talking about it and turns out he’s been hiding this for months from me. I was under the impression that he only bought this 1, but turns out he’s been doing it this whole time and just lying about it.

It just hurts because 2 weeks ago we were having a really open and honest conversation about stuff and I found out that he was hiding going back to therapy which was something that I was encouraging him to do so idk why he felt the need to hide it??? But anyways after that conversation I said “is there anything else you’re not telling me?” And he just looked me dead in the eyes and said “no”…