Both Aries and Leo are Fire Signs. This tends to be a very heated and passionate relationship. When it's good it's very, very good, but when it's bad it's all about loud arguments and damaged egos. In this partnership there's always competition as to who's in charge. Since a love relationship shouldn't be about power, this can become a problem. Both of these Signs have boundless energy, so both will always be on the go. Although they may disagree often, their differences of opinion don't last long -- Aries is too busy moving on to the next challenge to hold a grudge. Leo needs to remember not to be resentful if their Aries lover doesn't show them enough respect. Aries is a Cardinal Sign and Leo is a Fixed Sign. Aries gives Leo the assertiveness to charge ahead and take chances, while Leo can help teach Aries to stabilize and follow things through. Aries may sometimes hurt Leo's feelings by saying something hurtful without thinking. Conversely, Aries may be irritated by Leo's bossy nature and tendency to sulk. But they're both loyal and care about each other deeply, and when they can understand there doesn't have to be a boss, their relationship can be exciting bliss. What's the best aspect of the Aries-Leo relationship? The mutual admiration both Signs share for one another. With Aries as the initiator and Leo as the one who follows through, they both have their integral niche within the partnership. Their mutual energy and passion makes theirs a dynamic relationship. http://love.astrology.com/features/astrology/lovematch/leoaries2.html