"Couples that...."
Something we see quite often on social media is the sentence "couples that.....workout/travel/adventure (etc)......together stay together." (Look up the hashtag and you'll see plenty more examples) But relationship longevity is more complex than a hashtag can determine.
Although aspects of this are true; common goals, values and hobbies, are important in a relationship. This doesn't suffice as reasons to stay together! Relationships are much more multifaceted than that. Plus it's not what you do, but HOW you interact with each other during it.
@gottmaninstitute would say that couples who are attuned, turn towards each other, fight fair, can differentiate, continue to court and choose each other daily. These are some of the ingredients needed for a couple to 'stay together'....it just doesn't sound as sexy in a hashtag!
Finally, I would also remind you that Instagram is a highlight reel, and those highlights include relationships. Please don't compare yourself to other couples, know that you're not seeing behind the scenes.