I was teasing fiancé, then things got weird (EDIT)

Last night my fiancé and I were high and having a great child free time lol. He was sitting on his phone while I was waiting for him to take stuff out of my hands that he was asking for, and jokingly while I was waiting, I said give me your phone a few times, because he was sucked in it and not listening to me. Then he was like just wait I’m looking for something and started to change his tone. I asked if something was wrong and he wouldn’t answer me just told me to stop and go on. His whole demeanor changed and it got awkward and weird fast. Then he put his phone down and acted like nothing happened. I asked what that was about and he told me to stop being weird. Now I was sitting there thinking he’s talking to someone again or hiding stuff because he’s done things like that before. Now today he’s telling me to stop thinking like that, I’m being crazy and I’m making this a big deal.

Am I thinking into this too much?? I don’t want to cause issues, but he’s hid stuff in this past and earlier this year, so I guess naturally my brain goes there.

***For those of you saying why put yourself through this. We have two small children, my daughter is obsessed with him. I find it so hard to put them through a change like that. Also he works and I stay at home. I have no support system, and no money. Or maybe I am just dumb at this point.