Pray about this. I know it's hard, but just give yourself and your boyfriend to the Lord. Who would you trust more than Him with your love life? Let Him take the wheel and enjoy the ride.
If you feel that you need to break up with this man, then pray about it and the Lord will give you an answer.
Try to find peace and comfort in the Lord and focus on your relationship with him. I've always heard that Jesus wants us satisfied in him first and once we do that, we end up finding a life partner. So don't go off looking for love, when the best love is already there with you
If you are meant to be married Jesus will send him to you. If not, then you still have the Lord. Be happy and satisfied in him.
God bless you sister in Christ!