Accidental stealthing?

I know that this is technically not a BDSM issue, but I'm in a BDSM dynamic with this guy and I feel safe in this community. So I (F26) and this guy (M28) have gone on 3 dates so far. We both want a serious long term relationship, and he honestly seemed like an extremely nice guy who really cares about me. We discussed BDSM likes/limits, and I told him that I'm only okay with unprotected sex once we have taken an STD test and are exclusive. He told me that he has bought condoms over the weekend.

So yesterday we walked to my place together after work and he told me about how he had this incident at work where he tripped over his own backpack and spread all of his stuff across the entire floor of the building in front of a bunch of people, and had to pick it all up.

Then we get home, eat dinner and start a scene. From what I remember, he made me cum a bunch of times with his hands, asks me if I want to have sex now, and I said yes. I went on my hands and knees so I could not see if he put a condom on or not. Also the light in my room was a bit dim. After he cums, I touch his dick to double check that I'm seeing things right, and ask "wait did we just have unprotected sex??? ". He looks down on himself and says "oh shit, I think we did".

Long story short, he claims to have forgotten about it in the heat of the moment. I ask him to show me the condoms, but he can't find them anywhere in his backpack and concludes that they must have fallen out when he tripped over it at work. He also can't show me that he bought them in the drug store because he paid cash.

He did seem to feel bad about it and I made him promise me twice that he didn't do it intentionally. He said if I don't want to see him again he understands, and offered to go home and give me space. I told him I won't leave him for this, but I will if he ever disrespects my boundaries again. I asked him if he wants to be exclusive now and he immediately said yes and that he wanted to after our first date already.

Anyways, now I feel conflicted. On one side I feel violated and he broke my trust and his story seems dodgy, on the other hand, if he did pre-plan this, he could have executed it in a much smarter way. He said that he wouldn't do something like this on purpose, because he wants to have more sex with me in the future, and having to use a condom a few times would be a low price to pay for getting to date me long-term. I'm pretty bummed out because he seemed too good to be true until now.