When you're moody, your partner feels moody. When you feel irritated and upset, you're both affected by that fractious energy. You find that your emotional lives are closely linked, for better or for worse.
You have the ability to influence this person in a positive way, of course, but you are also able to bring them down relatively easily. If you're prone to irritation or discontent, you can expect plenty of arguments and grumpy silences, because that quality will only be magnified in this relationship. This kind of energy isn't all bad, though; this relationship is also characterized by a lot of creativity. There is a certain amount of emotional stimulation happening on a regular basis that could lead to great things. But it also can wear you both out! If you both consciously try to channel your energy into more positive areas, this could work between you, but it takes effort on both your parts. Focusing on creative projects together helps; even just helping each other paint your living room walls a new color is a fun project that fosters the more positive energy that's possible between you. Unconditional love is definitely a possibility between you, and one that should be worked toward; but don't be surprised if there are plenty of bumps along the way.