> What if you're dealing with someone else suicidal? Just listen and keep listening, without making yourself an emotional burden.

Careful with this, it's easy as a partner of someone suffering from this to over time get too impacted by the constant depression talk and walking on egg shells to not say the wrong thing.

My recommendation is to help your friend or partner get professional help, if after a couple of months of listening you're still just listening to same stuff. Otherwise it'll take a toll on you and two depressed people are worse than one.