Dropping out after two years - Am I making a huge mistake?

I'm currently studying on a Primary Teacher Education course, and failed my most recent placement. While in school, I was told that I shouldn't be doing teacher training, and I was encouraged to look into being a dance teacher, as it is one of my main passions.

When I went back to Uni, I had to think about what I wanted to do from there. The module was failed, there was no way around that. I knew that being a classroom setting was not what I wanted anymore, but I didn't want to waste the last two years. The Uni gave me two options:

1) Transfer to a generic Education Course for my third year, and graduate with that qualification at level 6 (not particularly what I want to do)

2) Add another module to ensure you have 18 credits by the end of the year, and leave with a level 5 qualification. (My preferred choice to be honest).

On top of this, my fiancee wants us to move to a place of our own by the end of the year, but I would need to have a full time job. He has threatened that he will move, with or without me and that if I stay at Uni he would seriously consider leaving me, a thought I can't handle right now.

I can feel myself slipping into depression, and I haven't felt this low since I was about 14-16 years old. Nobody at Uni really talks to me, and I'm always the one left on my own in group activities, forced to awkwardly slot myself with a group while everyone stares at me hoping it won't be their group.

I thought long and hard, and I think I want to leave after my second year. However, I'm worried that I won't have anything to go into once I leave in the summer, and that the idea of being a dance teacher is a pipe dream. I'm so conflicted right now, and I feel like I have nobody to talk to, since my mother would disown me if she knew I was thinking of leaving. Is there anyone who has gone though a similar experience, or that can offer some advice?

Your boyfriend should support you no matter what your decision - if he doesn't, is he really worth being with? You would have done that extra year at uni anyway if your course went as planned.