How do move on from a friendship that needed to end?

So this might be a smidge long. I 35f have this bestfriend m36. This guy has been by my side for the last 16 years of my life. From break ups, the birth of my children, traumatic circumstances and everything good thing in between. Over the last year its been pointed out to me how our friendship has seemed to strengthen. I agree thats how it definitely seems. Especially these last three weeks. I had to really lean on him after a traumatic experience with my ex partner, a stay in a psychiatric hospital, a break up and a miscarriage. Ive been really going through it and he's been an amazing supportive friend.

The last time i saw him I had said to him "I am glad you are in my life" but I no longer feel that way.

Today news broke that he arrested for child luring using telecommunication device, making sexually explicit material available to children and making child sexual abuse and exploitation material. My children's father had sent me an article as im not on social media.

I was absolutely blown away to say the least!

Yes i have children. That are in the same age range as the child he did that too. And what's messing me up the most is if he was using our recent closeness as a way to get close to my F14 child. It has also crossed the mind of my family members and a few other friends as well when they saw.

And I might never find closure regarding that.

I blocked his number and removed him from my life for obvious reason and had my childrens father go through their phones (they are on his custody time currently and the phone checks are already regular occurrence) to see if he tried making contact with them. He said he didnt find anything suspicious but the question is still in the back of my mind if that was indeed his intentions so I will be looking throughly when they return home.

I am feeling both disgusted and grief. Disgusted for what he did but grief because I have now lost what I thought was a solid friend. And then I feel guilty for feeling grief because at the same time, my heart absolutely aches and breaks for that child and mother who had to go through this.

Has anyone else been in a similar situation? How did you let go from the friendship? Will it ever be easy making another male friend in the future?