Had he made any kind of commitment to you before you moved that he would help you when you relocated?

Just because you are nice to someone doesn't mean they are going to be nice to you. Your expectations of him coming through for you were based on hope. You didn't really know this guy. Now you know him a lot better. He's not a nice guy. He took advantage of the time, attention and understanding that you offered, but he has no interest in reciprocating. That's just the kind of person that he is. You didn't know that before, but now you do.

People get to decide how giving they want to be . . . or not want to be. Some people who are not very giving have no qualms whatsoever about letting others give to them.

Don't think so much about dying. You deserve life.

I'm sorry you age going through this loneliness in a strange place. No matter where you are in the world, there are nice people nearby. You just have to find out who they are. Try to find ways to to connect with people in your new location. I promise you there are strangers who would be willing to help a person new to the area find her way around. But don't overly depend on the Internet to connect you. Talk to people at stores where you shop. Ask questions of neighbors. It takes time, so be patient. Usually, people like to share what they know about their corner of the world to a stranger who asks for guidance.

I hope things get better at your job. Wait a while before judging your boss or anyone you work with. I've found that 6 months after starting a job, I've often found that people were way different from how they seemed when I was new to the job. Try not to lose hope. It takes a lot of courage to do what you've done. People will find that interesting about you. Give them a chance.