Difference anxious and fear

What is the difference between those 2?
I’m trying to answer the question of the homework book and I’ve find myself that the only thing I’m scared of if I have to break up with my bf even if I don’t want to. Like I’m being obligated by my heart or whatever to have to break up even if I don’t want to.
I’m not even scared of what will happen to me like having bad stuff happen to me as long as I have love in my life.
Sometimes I noticed that I “enjoy” or feel “comfortable” when something bad happens so it gives me a reason to be sad.