My husband 45m and I 37f have been together for roughly 18 years. We've been married for 13 years, a year after our first daughter was born. Him and his buddy have been friends for 25 years and attended the same college. We recently hosted a party and after his buddy had a couple of drinks he blurts out "hey remember that time I got arrested for being desperate enough to drug that girl's drinks so I could fuck her?" My husband laughed uncomfortablebly while I just stood there shocked and asked him wtf is he talking about? He said that he got arrested for drugging a 15 year old who has snuck off to one of their college parties and "she got what she deserved because little girls shouldn't sneak out and party with the big boys". Obviously I stopped the party and kicked him out. My husband said I'm overreacting and being a "drama queen " and his buddy is a changed man who made a silly mistake like all 21 year olds do. I told him that attempted rape isn't a silly mistake and that if he wants to defend his buddy he can follow him right out the door. We have a 14 year old daughter and he knowingly allows a predator to be around her. I know that a person did it once they'll do it again. It's only a matter of time. Now my husband's parents are blaming me for trying to ruin our marriage over something that his friend did while my big sister wants me to end the marriage. I don't know what to do?
Edit: My husband has been at the same party and knew about all of this the entire time, which is why it makes it so much worse because he knew what his buddy did and stood by him and has allowed him to be around our daughter and even wanted him to be her godfather. (I was insistent on my brother being her godfather).