LOL. Anyway SimonMagnus, I would be concerned that someone who is suicidal over a breakup might also be capable of harming their ex. Happens.
But, I agree, a more mature breakup would be staged: first, considerate breakup w/out antagonism. Followed by no contact if its clear there is some instability.
So, what does a civilized breakup look like? That might be more helpful for the young ones to ponder.
Second thoughts can generally be amended with judicious action; injudicious actions can seldom be recovered with second thoughts.
--Cyteen by C.J.Cherryh