I have done that for 6-7 months and it worked. Of course, we met during that time 4 times (for 4-5 days), but most of the time we were in different countries and Skype and Viber were the only ways of our communications. 

Now, we are together (both of us did everything for that), however, those 7 months were really hard, and if it went longer, I don't know what would have happened, because I just could not tolerate that situation!

Good luck!