I pretty much added something to the topic that ny friend loves as well. I didnt expect that they know the info as well, I might be overthinking that I made them sound dumb and I feel dumb as well for mentioning it.
No obviously not, it's not stupid one bit. If they said "I know" just say, "Oh! i didn't know you knew, nevermind." don't put down on yourself, you're wonderful and you don't deserve to overthink that!! Your not stupid don't ever think that :).
Neither are they, and it doesn't make them seem stupid / dumb one bit, don't say sorry to them, that's not a good thing, because there isn't anything to say sorry about. But because of the fact ur thinking your stupid is worthless.
Hope this helps :)