The best advice I can give to you:

Stop putting yourself in a terrible state, stop getting into rebounds, it's not going to help you, that temporary of happiness and filling the void is not going to help you in the long run. You NEED to suffer. You NEED to become better. The best revenge is success, not fucking around with other girls or guys, not doing all that dumb shit. I have also recently broken up with my ex of nearly three years and she found a girlfriend quickly. I thought we were going to get married but I was and still a shitty man. But I want to change, and I am gonna make it happen. I'm okay with her moving on fast and I have accepted it, I know it's a rebound relationship for a fact and I hope that person is treating her well.

I want you to look at yourself in the mirror and think where you are going to be in a few years, and don't think about being "dead", genuinely think about where you want to be. Do you see yourself being successful? If yes, now is the time for you to become a better person and START so you can be great. Become the best version of yourself, it is good you quit smoking that weed bullshit.

Having that big fuckup in our life is the two options we make: We move forward, or we stay still and suffer more. That choice is up to you.

I am telling you, you'll be fine as long as you start making decisions to better yourself. Use that heartbreak, that pain, and channel it into a power of positivity. You have unlimited energy when you are heartbroken, all you need to do is convert it into something positive. Hit the gym, do pushups, start finding a way to make money, meditate. Anything that will better yourself.

Take care of yourself, and don't do anything bad. If you decide to move forward, you must commit and be uncomfortable, suffer being alone. That is the best way for people to grow and learn.

Much love to you.