Would you cut off a friend if you knew they assaulted someone?

I got sexually assaulted in my sleep by a former friend “Justin”. I told the friend group only cause I don’t have the heart to tell his mom nor do I wanna press charges. I’m happy he wasn’t able to penetrate me with his skinny little thing. There’s a universal studio trip in March for my buddy “Ryan’s” bday. Justin will most likely be there. We haven’t spoken since last month and I am iffy on being around him. I truly wanna go and hang out with my other friends for the birthday since they’ll be in my area for the day but I don't know. I know I can prioritize fun and good eats and not let a single person bother me, but something deep down is still bothering and I’m unsure as to what.
Would you cut off a friend if you knew they assaulted someone?
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