What would you do if an opposite sex colleague said they had suicidal thoughts due to you not liking them back?

So they confessed that you not liking them back was giving them suicidal thoughts. Would you just try to comfort them, or would you immediately tell your boss, because you're worried about her getting you in trouble? Would you still proceed to tell your boss even if she begged you not to, and that she would go and get help, etc?

Try to comfort them
Tell your boss immediately
Both
Neither
Select gender and age to cast your vote:
What would you do if an opposite sex colleague said they had suicidal thoughts due to you not liking them back?
Post Opinion