Do I tell my friend or not?

Ok hi, so long story short I was getting advice from a friend abt masturbation. I don't do it rlly, I've never lmafe precum before, and I struggle with registering the emotions with it.

But basically I said I would let him know how things go and if I need more advice I will ask.

But basically after that convo ended, he went to sleep. I didn't, I looked down bc it felt weird and there was precum.

Now im not attracted to him. And i feel that if I do tell him it'll be like telling him I jerked off to him.

So do I tell him I've progressed and that happened. Or no and save any risks. And if I do tell him how would I phrase it so I don't say it's bc of him.