Hi, @chellexx. I've been in your boat and felt everything you did, absolute fear and lonliness with a very cold unsupportive partner. Please do not make a decision out of panic though, and especially not to please someone else!! Take extra time if you need it, and if you can. If you are not more than 50% sure, you might regret. Regret comes when women feel pressure from others and/or the decision is not their own, either way.
I chose to go it alone, which was a very difficult decision to come to, BUT for me he was the only negative thing in the equation, so I removed/aborted him. I realised if he was more supportive, I'd have been happy and that said an awful lot to me. I just knew I would be someone who would not cope mentally with the alternative, and it was not unwanted by me. He made his decision and there's been no contact. After seeing his lack of empathy etc. I couldnt unsee it, and we will never be together again. Everyone's situation is different, I have good support and decent job etc, and what's been right for me, wont be for others. Im also a lot older, so I saw it as my chance/opportunity. You do need to consider your circumstances. Please know that there's support out there, I got the free counselling and it helped me think through ALL my options , which I thought through intensively, to visualise my life in a years time (or 5) if I went with either path, and to think about what I'd regret the most.
You'll find your way and you'll make your decision on what's right for you, but please don't put other peoples feelings before your own. Also, relationships/men come and go...and regardless of outcome, it's unlikely a relationship can survive this.
Good luck, talk to someone other than your friend, and take time out for you. It's a horrible place to be in, wishing you the best.