My boyfriend of 4 years and I currently live in San Francisco. I recently got a job offer from a company in London. It is an amazing opportunity, and I really want to take it. My boyfriend is very supportive but he has made it clear to me that he will not be moving to London with me. We have been together for FOUR years, and I do not want to break up, but I have never been in a long distance relationship and I'm scared that it would end badly. Does anyone have some advice for me?