Apologies if this is the wrong sub, i dont know where to post this but i feel bery depressed.
Ive been with my girlfriend for 3 years and known her and been very close to here for longer, but lately the two of us have gotten jobs and been busy. Whenever we have had time together we end up arguing. This has been very distressing for me because i love her so much and have been finding her to be so cold and distant lately. 
Tonight she went out for work training (she works as a barback) and then went out for drinks with co-workers after (which was already concerning me as she has no momey to buy drinks, but from messages she has clearly had a lot to drink) im writing this at 5am having had no sleep and im supposed to go to my job in an hour but she still isn’t back and im totally heartbroken. I will break up with her and ask her to move out when i see her. Im so scared as i have barely any friends and have probably been pretty codependent on her the past couple of years. I feel like I can’t cope with this at all.