I know how high school relationships are, being that I've been in a few myself. There are those who flunk out after a few weeks to months, give or take. Though there are those relationships that make it, and those commonly become long-distance due to college. Long distance is extremely difficult, but there are ways to conquer it and make it work.
1. HAVE TRUST!
Long distance can cause a series of anxieties which include the most common: cheating. This tears so many relationships apart, and though it happens all the time, if your significant other has given you every reason to trust them, do it! They are dating you with good intentions. If they are good to you, always give them your trust; you owe that to them as much as they do to you.
2. HAVE FAITH!
Insecurities easily develop in relationships between teens and young adults. Everyone is attempting to find themselves, but it should potentially be easier to find yourself alongside someone else. Having faith in your relationship keeps it powerful and strong despite the distance and has a greater success rate if you believe your relationship is going to be successful. If your partner begins to feel like you doubt them or the two of you as a pair, insecurities can cause the downfall of what should have been a happy relationship. That is another thing that you owe one another.
3. BE FAITHFUL!
If you want your partner not to cheat on you, don't do it to them! Being faithful in a relationship is probably the most important thing you could do for the two of you. Faithfulness is the basic building block for trust. If you are not truly faithful, your partner can never put their full trust in your or your relationship by any means. If you feel the need to cheat, do not pursue a long distance (or short distance) relationship. If you are truly devoted to your partner, there is nothing you two can't handle together!
4. ALWAYS MAKE TIME FOR ONE ANOTHER!
Time is scarce, especially when high school stops and you can't see one another every single day. Always make sure to use what time you may have very wisely. Do what you think is fun, soothing, loving and joyful. Go to your favorite date spot, spend some cuddling time on the couch, hold your significant other tightly, and reassure one another (maybe not verbally) that all is well, and you're both truly there with each other. I cannot stress how important this quality time becomes when it is so extremely limited. When physical contact cannot be achieved, use Skype or FaceTime -- or anything. A voice or a face is much more personal than just texting. Everyone texts; it's up to you to make it more special than that.
5. SAY "I LOVE YOU" OFTEN!
Reminders are always really amazing, especially when you both are busy and distracted. It's very easy to forget what "I love you" sounds like if you're not careful, and it's crucial at a certain point in a relationship to remind your partner how much you love them. It may not even be a straightforward "I love you." Tell them you hope they make it back to their dorm safe, or that you hope that their classes went well. Being conscientious of how they are doing and feeling is such a loving thing to do. Not only does it reassure your significant other that you care, it binds you closer together as a team (because that's really what a relationship is).
As someone who is going through a long distance relationship right now, I hope this helps you to have more faith if long distance is what you're striving for. I don't doubt hardships, but with these 5 things and constant effort, I'm sure you can succeed. For all of you going through this right now, I'm happy for you, and I wish you the best of luck.
