<human>: Throwaway with details changed.

We've been together since we were teens.  We are currently engaged but have no wedding plans.  We live together, but I pay for food, rent, dates, etc.  I'm in dental school and he just got kicked out of undergrad due to craptastic grades.  He has no job.  So I'm paying for everything with loan money.  He doesn't keep the house clean or do laundry.

This is just the tip of the iceberg.  He tells me I won't find anyone better than him.  Foreplay consists of him whining about being sexually frustrated.  He won't get a job no matter how many times I ask him to.  He says he might kill himself if I leave.  My family is not impressed with him.  Etc.

I've spent so much time building a life with him.  I'll be a massive failure if I give up now.  Additionally I'm maybe cute at best, pretty boring and after being with him, I can't imagine that any man wants a romantic relationship.  Every man just wants easy sex.  Surely this isn't true but I can't believe it, and sorry for generalizing.  So basically I'm screwed in the new relationships department.  I'm damaged goods and nobody wants that.

I can't talk to him, he gets defensive.  Then we argue and I feel guilty.  I know he has his share of problems, and I'm willing to work it out, but he has no interest in changing.

Can you provide a brief overview of the text?
<bot>: I'm miserable.  I want to leave but don't think I can.  I think I'll be alone for the rest of my life.