I'm in a similar situation He is in nigeria and i'm in south africa, but he is a returned missionary we haven't met but have sent photo's of each other. what i believe is that prayer and the guidance from God will help you know what you should,we have also been dating for 5 months now and he is making arrangement to come study in south africa so he can be closer to me. I also believe that Heavenly Father will answer your prayers and if this is a trial that he has to put you through then i believe it will be worth it and He will bless you. I also believe that for myself, we always talk and say hey in the end Heavenly Father will make a way for us to finally meet and get to spend time together and know each other.So have faith don't loose hope He is always there.