It really sucks that you lost the love of your life, but if you just hang on, then you might find someone better. If you can't find it in yourself to live on for yourself, maybe think about your future partner and how if you die now, then you'll never be able to meet them and be happy together. I've lost people I was deeply in love with before, and it's the worst; my mind jumped directly to thoughts of suicide too, but just give it some time to blow over, it might take a few years to really be over it, but things really have a good chance to get better over time.
About your job, maybe you need to find something else to do if it's not going well or if it's making you miserable. You've still got a lot of your life left to live, I'm sure you'll be able to find something else to do if you want to.
Maybe you don't even need love in your life, perhaps you can get by with just finding hobbies you enjoy. There's not only one route to happiness. There's a lot of things in the world to enjoy, you've just gotta look for them.
Everything tend to look shitty when you're in a depressed state too, I'm sure there are some things about life that you enjoy, try not to forget those things. I try to never let myself make big decisions when my mental state is compromised, it's quite easy to go overboard and above logic when you're in despair.
Anyways, hope you can find some reason to live on.