If your husband did something bad but it was a long time ago would you try to work it out?

I have two kids with my current husband and 2 with my ex. My son (23) has never gotten along with my current husband. My son has a friend and someone I knew sent me a screen recording of my son's friends live because my son was there talking about the time he was offered coke by his step dad when he was 14. Back then I was gone a lot working nursing shifts and I knew my husband invited friends over. I just never knew they were doing drugs. I called my son about it. He said he never expected me to see it because I don't have TikTok. He told me when he was 14 and went downstairs all the men including my husband were snorting coke and handed my son a trey of coke to tell him to chill the fuck out and my son declined it because he thought cocaine always ends in death. I asked my husband and at first he denied it but then said "Well that was a decade ago. And he didn't do it."

I am very disgusted that he would do that! Also upset my son never told me. I'm trying to decide if this is worth ending a marriage and breaking up another home for my kids.