I 29(f) and my partner 30(m) have been together for 3 1/2 years. We have always trusted each other, never had an issue with handing each other our phones or using one another's phones. We live together and have children together.

Around Christmas time I was going through our bank statements ( I take care of almost everything financially) and I noticed a statement for something I've never recognized before for about $20 then I noticed another one for the same thing a few weeks back for $40. So I asked him about it. He said it was nothing and not to worry about it. I knew it was around Christmas time so it could have been gifts but I had a deep intuition I needed to dig deeper.

I did some digging and found it was for a cam girl app. I waited until he was asleep and went through his phone, sure enough he had been buying coins to send gifts to other women for personally videos/ pics. About 40 or so women. I was pissed and hurt. We hadn't been out on a date in over a year due to finances and trying to save money but he had money for naked pics/. Videos from other women? Btw our "personal" life is great and there are no issues there

I confronted him about it and told him I considered that cheating and that he hasn't even taken me out on a date but yet he had money to basically send to other women. He apologized, deleted the app in front of me and told me it would never happen again. I told him my trust had been broken and I would randomly look at his phone to make sure he wasn't doing anything like that again. He agreed and said that was fine. About a week later I went through his phone and lo and behold he had the app once again but this time wasn't buying coins and sending gifts.

I did some more digging and found out he had a prepaid card that he had also been using at the same time of the first incident. So it was well over $200 total he had spent on this app. I know it doesn't seem like a lot but it's the principle behind it all. Anyway fast forward to recently. I randomly grabbed his phone to look at it which I haven't done it months. He looked at me and said " I thought we were passed that" and I said " I thought we weren't gonna cheat on each other but one of us broke that"

Anyway am ITAH for still not trusting him?