HI!
Wow, it seems like you're having a really rough go right now. I'm sorry you are feeling so isolated, but I'm glad you found us! The folks on here have helped me so much when I feel alone and sad, I hope we can do the same for you now.
I know that you might not want to hear this, but you need to get out of your flat! It can be scary when you don't have friends and don't know your city well, but sometimes it can be an adventure to get to know it. Who knows, maybe someday you and your boyfriend will be on vacation in that very city, and wouldn't it be cool to be able to show off the sites?

Have a great day! It is nice to meet you,
Amarie