Getting married is a big decision, and sometimes you wonder if your marriage will last even after you've said "I do." Life is a constant flow of unexpected twists and turns, and those constant changes can really impact a marriage. They can strengthen your relationship if you let them, but they can also do some serious damage.

So, how do you know if your marriage will last forever? You certainly can't simply hope your way through the relationship — you have to work hard. You have to be tough. And you definitely have to get really good at apologies and forgiveness.

But when you're going through a rough patch, it's hard to see the light at the end. It's so hard to imagine yourself ever being happy, let alone having a wonderful relationship.

When your relationship is going through a rough spot and you don't know if you'll make it, ask yourself these questions. If you answer "yes," you can get through anything.

1. Am I happy most of the time?

Your sweetheart isn't always going to make you happy, and you'll disappoint each other sometimes. But if you're happy for the most part, and your partner is a big part of that happiness, you've got something great going and you should never let it go.

2. Am I treated with respect?

You and your partner should always treat each other with respect. If your sweetheart listens to you, supports you and lifts you up, you're in a great relationship.

3. Is my partner nice to me?

This seems like common sense, but it's overlooked in many relationships. You and your partner should be kind to each other. If you're always calling each other names, yelling and saying mean things, work together to turn your relationship into a loving, safe place.

4. Would I be sad without them?

If you can't picture life without your sweetheart by your side, your relationship is super solid. When you have each other to lean on, you can get through anything life throws your way.

5. Do we help each other?

It's no secret that you're both human, and you both go through stressful times. You should do everything you can to lift each other up during those times and help each other whenever you can.

6. Does my partner make me want to be better?

Your sweetheart is amazing when they make you want to be the best version of yourself you can possibly be.

7. Do I want my marriage to last forever?

When you said "I do," you lovingly committed to a life with your sweetheart. Building a lasting marriage takes hard work, but it's so worth it. You absolutely can have a forever marriage if you truly want it and work for it.

8. Do I love my partner?

This simple question can open your eyes and make you realize just how much you care about your sweetheart. If you truly love each other, your marriage can last through anything.

When you're in the midst of a rough patch, slow down and ask yourself these questions. It might be hard at first, but once you know the answers, you'll be able to clear your head and strengthen your relationship.