How long does long distance relationship last?

In my opinion as long as you want it to last.

Me and my bf have been together since we were 15 and have now gone to separate unis. It's now almost the end of our first year at uni.

It is not easy to keep a long distance relationship going AT ALL! Trust me. There is a lot of adjustment on both sides, I think boys tend to find it harder because they need more physical interaction to maintain the bond and a loving relationship and my bf defiantly struggled for months. You just need to stay in touch and tell each other how you're feeling about the situation, be supportive and if it's meant to be it will last. :)