Still not sure about things

I don't know if anyone has seen my last post. But tl;dr I was going through some communication issues with my partner and he was annoyed at some things I did. He said he still loves me and stuff but obviously had mixed feelings for me.

Yesterday we met up to have a nice dinner and I was fully expecting to talk about what happened. I was so anxious and stressed beforehand I tried to prepare what I wanted to say (I'm very bad at confrontation and I clamp up in difficult social situations). So when we finally met up I can feel he was still not his usual way when with me (joking around and lighthearted). But during dinner we did decide to get a cocktail jug as we both liked to drink and we agreed it would be fun, and he said he wanted to. Also, I have been going through a lot of stress the past few days and he knows it, so he wanted to cheer me up. So we did, we got a bit tipsy during dinner and just had a very nice conversation about random things like videos we watched, what we both find funny etc. It was a very happy dinner in a sense like we're back to normal again. After dinner we decided to do some other things and all seemed to be fine again, but deep down I felt we we'rent 100% back to normal. Near the end of the night before he had to head for work, we had another nice conversation about video game stuff he's been watching. Somewhere in between he told me I'm beautiful, kissed me and stuff. We said goodbye and all, and we left in good spirits. He's starting to talk to me as he normally would in text also, but without much joking just yet. I just want everything to go back to 100% normal again.

I don't know if I'm just overthinking his behaviour, but deep down I know we still need to have the conversation at some point. (For reference we can't meet up until end of next week to talk and I don't want to do it through online text). I don't know what's on his mind but I feel that whatever happened prior is still at the back of his mind and I need to be careful not to annoy him again otherwise he might just react much worse than before. It's nice assurance that he clearly still loves me, still interested in me and having fun with me but I feel we definitely need to revisit what happened. He was clearly upset with me and I don't think it can just be shrugged off completely. Even if he's fine now, I don't want him to keep resenting me. For next time I just don't know how to bring it up? I'm still very worried about how that conversation will go, and it's stressful for me to be in those situations. Any tips?