Feeling Guilty

So the other day one of my classmates tried to commit suicide...... the day before he was complaining of headaches and I asked if he needed me to take him to the office to go home but he said no. I could tell he wasn’t himself but yet I thought nothing of it. I feel so guilty because I was RIGHT THERE why couldn’t I see that he was struggling, why couldn’t I see that he needed help. He’s struggled with depression before so why couldn’t I put the pieces together. Thankfully he survived but he got too damn close. I’m not sure what to say to him I’m just trying to be supportive and be there for him but I can’t stop feeling so guilty.

Update: 1/7 I found out he tried again this weekend I don’t know what to do anymore we’ve been told to prepare for the worst because he got really close again.