Wouldn't it be nice if relationships were 50/50? I had always thought so, but I've come to realize that is a rarity. And I do believe I'm glad of it, because as I've given it more thought, it'd be impractical. There will be times in every relationship where one person or the other will be going through a trying time. They will be stressed or overwhelmed, and they simply won't have much to give. And here in lies the beauty of love and being in relation with someone else: when you're weak, they can be strong. When you only have 10 to give, it doesn't matter because the other's love will make up the difference.
I admit that I've struggled with this, still holding to the idea that it should always be 50/50. And don't get me wrong, I still whole-heartedly believe in the relationship being equal, but my definition of equal has changed. Now, instead of each giving 100% all the time, I see equal as each partner being willing to take their turn at being strong for the other. I see it as saying, "I'm in. During the good and bad, I'll be with you and for you." It isn't always easy, but that's love. When you choose to love someone, you're choosing to love an imperfect human in an imperfect world. Love isn't always easy, but it is always worth it.