Well, offhand, it seems to me that you have "too many eggs in one basket". But, first things first.

You need to see a psychiatrist to get on a mood stabilizer, clean up the other drugs and alcohol (because they make bipolar illness worse), and get yourself prepared to finish the paramedic course so that you have a job to be able to care for yourself.

I doubt very much that the girl you say you love so much is the right one for you.
Her loyalty is in question, in my view, and you need calmness, steadiness, and faithfulness in your life AFTER you are stabilized.

I would try very hard to put first things first by getting in to see a psychiatrist, then getting the work finished on the paramedic course, and try to start saving a little money. Getting order in your life is vital for the bipolar person (as it is for everyone).

With proper medication, restoring your brain chemistry to normal, and having a full-time job with no romance in your life until you've had a year of stability may go a long way to bringing you a life that you can live with, having peace and contentment. Those are two things to look for in an ordered life, and they will seem strange at first. So be prepared to start thinking about positive things you may do in your life as you regain your balance.

Your parents would very likely be willing to support you in your efforts if you hit a snag and need a little financial assistance as you pursue a new life for yourself. Try
to keep your independence, however, as much as you can.

Don't expect too much from the girl leaving hoping that she'll return in August or
September. That's not very encouraging, I don't think. You need more stability and
security before you invest so much in any one girl--preferably, a lady as you move
into a calm and serene life.

I wish you a lot of success in your efforts and hope you will continue to post as you feel the need to vent.

Genetic