My 27M husband lied about what he was watching to me, 27F

My husband usually goes to bed after me. Last night I woke up while he was on his phone. He did not see me wake. I silently watched as he went through reels. He would look at some comments, then continue. He did click on some girls comment and look at her profile for a few seconds before clicking out. Then, he switched to YouTube. It looked like he searched something and clicked live. The results were pretty girls with colorful backgrounds. He clicked one, turned the phone sideways, and covered the sides with his hands and I couldn’t see what he was watching. (He still did not know I was awake) he just watched and after a few minutes I pretended to wake, too curious to see what he was watching. He sees me wake and immediately stops watching. I as asked what he was watching, he is now closing the apps and putting his phone away, and tells me ping pong videos (he’s very into ping pong and does watch these videos often too) but I know that’s not the truth. He lied, so I waited until he was asleep and did something I never do: I went into his phone. I have Face ID on it so I grabbed it and saw he has been watching asmr, and it looks sexy. On of the searches was for ‘celine asmr’. While it’s okay to watch that I guess (it’s a little sexual) but I am concerned he lied to me so easily. The question now: do I ask him why he lied, or let this pass and see what happens? I am really upset about the lie, it tells me it’s easy for him to lie about small things and causes me to wonder what else he lies about.