Does distance make the heart grow fonder?

Denisse
I have been off and on with my bf for 9 years, back on since earlier this year. We have decided that 2016 we will move in together and travel 1 last time before trying for Children (aka our most important year) well, life! He just got job offered an amazing opportunity in San Francisco. Making 100k to start. Thing is he has to commit for 1 year and a half. And I can't up in leave because I have my career here in Los angeles... would you leave or stay in my shoes? I need some help! !