Have you ever had to deal with a friend's/family member's/acquaintance's suicide?

Today, my best friend found out that one of her good friends seemingly committed suicide a day or two ago. She’s been at my apartment for several hours now because she didn’t want to be alone, and she’s slowly been finding out more and more details. I’d hung out with this person two or three times, most recently only about two weeks ago when the three of us went out, which is when I got to know her a lot more, and she was such a wonderful, sweet, funny person—needless to say, this was very unexpected. This is the first time I’ve had to experience someone I know taking their own life, so I’m feeling very strange and confused about all this, especially since my friend is so upset. Has anyone else on here gone through something similar?