My long distance crush confessed her feelings to me yesterday. How do I keep a long distance relationship going?

So I've known her for a long long time and she do really mean a lot to me, and yesterday when we talked she said she's been feeling this for a long time and I feel the same way so obviously I told her and now we are in a relationship. And it felt awesome yesterday we would just sit for hours texting about our feelings, but we can't do that forever we both have real lifes too. But she really means the world to me and I'd hate to lose her, and we might even study in the same country when university comes around. How do I keep the spark going? She even says she'll stay with me forever as long as I don't cheat, can you believe that, I do, but someone with outside perspective can you give your opinion on the whole thing?