I've been in two LDR. Both of them involving girls of another country and both lasting longer than a year. First one ended because we never had a chance to meet each other, and so the distance became too much for her to bear. The second one I'm still currently involved in. We see each other every Christmas, spring break and summer. Doing great so far. It's a lot of pain, a lot of sacrifice. Love brings about the sharpest pain and deepest joy. It's part of what Love is. If you're truly in love, you will always be willing to make the sacrifice to hold onto your partner, no matter how much it may hurt. For if you truly love, you know that the happiness brought around by love is greater than any pain you could ever feel. My two cents.