This is a passionate combination, and also very high on the compatibility scale. Both signs tend to be affectionate, bold, extroverted, and inclined to seek excitement and novelty, so these two can have a blast together. However, both will want to be the center of attention, which could lead to friction and drama (and fights will be as passionate as romance with this pair).
Although both signs tend to have similar social drives, Leo is more concerned with appearances, so Aries impulsivity in social situations can lead to agonizing social embarrassment for Leo. In addition, there will probably be struggles for dominance with this pair. Both Aries and Leo will want to be the boss, and neither can tolerate being ordered about, so they may end up deadlocked over a variety of issues. An excess of pride and ego on both sides can cause the downfall of this relationship.
On the plus side, this is an exciting combination, both for friendship and romance. And because both individuals tend to be generous and warm-hearted, it has the potential to be a mutually supportive and loving match. However, its success is will hinge upon the ability of both individuals to compromise and allow one another to take the lead in certain situations, and neither sign finds this easy.
Aries and Leo tend to be compatible in terms of lifestyle preferences. They share a need to stay active and a strong competitive streak that can lend excitement and challenge to the relationship. These two will want to get out and socialize on a regular basis, and they’re likely to cultivate a wide circle of friends together (unless their ascendants fall in shyer signs). Both Aries and Leo also tend to be creative, athletic, or both, which provides plenty of common ground for the development of shared interests.
Note: There is more to astrological compatibility than sun signs alone. Other elements in a person’s natal zodiac also play a role. Ascendants (rising signs), moon signs, and other planetary placements and aspects also shape personality and affect compatibility. For example, a Capricorn with Leo rising will be more extroverted than a typical Capricorn, and a Taurus with Aries rising or the moon in Sagittarius will be more compatible with Sagittarius than a typical Taurus. For more information on other natal chart elements, see Astrology Sun, Moon, and Ascendant.