How do I DTR??

I'm really happy right now lol. But here's my problem...normally when I talk to someone from Tinder, right away I'll ask 'So what are you looking for on Tinder?' Now I'm 99.9% positive I asked him that, cause that's what I ask everyone, but 3 or so months later I can't remember what he said. 🙄🙄 Now we're actually going on dates and all that, but I would reallyyy like to know if he's looking for something more serious or just someone to pass the time, you know what I mean? I'd rather get it out of the way so I don't end up wasting my time. I just don't know how to ask him without letting him know that I forgot we talked about this already??😂 Because I don't want to hurt his feelings, like I didn't pay attention to him before, you know? I need a casual/borderline sneaky way of figuring this out! Any tips??😂