You have some excellent advice posted above.
Cutting contact and saying you dont want to be friends with her was a good decision. That shows you still stand your ground for your emotions and your not about to be walked all over, so be proud you made that decision. That's a hard one to make for many.
You dont necessarily need to get another girl. A lot of people will tell you "out with the old in with the new" "new nail drives an old nail out" etc. Well not true for everyone, and you just may not be ready for another girl. That's cool.
Dont go messing up your house, or getting yourself in trouble cause of your new found hurt and aggression. This will pass, and you will become a bigger stronger person because of it.
1. Keep busy. Start working out, get a tan, buy some new clothes, do something to make you feel awesome about yourself. Exercise really helps with the emotional aspect to. Take that aggression and use it positively. Art, music, working out, sports, etc. Just do it positively! (not drugs, as I did to cope with a ex at one time, it will lead you to more pain.)
2. go out have fun, hang with your buddies. Try new things new experiences. Go to concerts etc.
3. You say you suck at relationships and you fkd this one up. It's ok to take a responsibility for your screw ups, and even better to self reflect and realize how you can not do that again. But don't take it all to heart. Were all human and we all have made mistakes and will continue to.
This might sound sorta lame lol... but when I broke up with my ex, I bought a notebook and wrote in it every day. Just wrote whatever was on my mind. Whether it be things I wanted to say to her, or my feelings at the time. When you get done, you re-read it and are amazed by whats going on your head, when you can see it from a different perspective. One day you will fill that thing up, re-read it all and feel even better knowing how far you have come.
stay strong confident, unstoppable.
