Situations like this are tough because majority of people these days use suicide as a way of seeking attention and forcing fear on you if you were to leave, I assume it's because they're scared of the drastic change in life and changes within themselves if they had to lose a partner, I also found once someone is used to having a reliable 24/7 support person to rely on its hard for them to feel optimistic and have hope without that supportive person by their side. Which fir the partner being relied on can be tough and frustrating not being able to fix all their issues but hope you and anyone else know that it's not your duty to be the one to save them from feeling this way it's up to that individual themselves to seek professional help. Which is much easier said than done too Which is why I find it understandable why it's simpler to rely on someone instead. Unfortunately a lot of people actually succeed in their suicide after being dumped by a partner so I'd just be thankful that you didn't have to bare the weight of that on your shoulders, and even if you did youd just have to keep in mind that was their choice to do the things they do and it's not your responsibility to be the one to protect then from themselves, in a relationship or not. But glad it didn't end up worse but understandable that this would still be pretty traumatic to deal with