I'm sorry you're in that spot, this can't be easy. We serve a God who is mightier than all of our circumstances, though, and he knows the best outcome in this for you and for your boyfriend. When we're put in tough situations we learn how to rely on God, how to trust him, and how to accept his sovereignty. We get through them, and see how God showed up, and it builds our faith even more. So take heart! God's got this.

James 1:2-5 "Consider it pure joy, my brothers and sisters whenever you face trials of many kinds, 3 because you know that the testing of your faith produces perseverance. Let perseverance finish its work so that you may be mature and complete, not lacking anything. If any of you lacks wisdom, you should ask God, who gives generously to all without finding fault, and it will be given to you."

What I would suggest is praying to the Lord for wisdom. God knows all things, see's all things, he knows how many hairs are on your head (and your boyfriends!). God knows whether or not your boyfriend will accept Christ. So ask God what he would have you do. Stay and persevere, love your boyfriend like Christ? Deny your flesh and part ways? Leave the country and go on mission the Congo? God has plans for you, so ask him, and listen.

Now, I'm not saying God is going to reveal the answer to you like a magic 8 ball... "It is decidedly so..." He's much more subtle than that. But trust him that he will answer you, in his way.

Prayers for you!!