in the love department! Although they will certainly respect their initiative and energy level, the rest of Aries behavior is simply unacceptable in most matters. Ultra-ambitious, when an Aries asks your opinion about their career trajectory, it's a sign not only that they value your opinion, but that they're also thinking about how your own five-year plan will factor. Are you going to find your soulmate at last? Just remember: Work together, do not compete! That being said, it s always interesting to know where you might butt heads with someone, so according to astrology, here s who you should never date. Aries (March 21 - April 19 ) Taurus (April 20 - May 20) Gemini (May 21 - June 20) Cancer (June 21 - July 22 ) Leo (July 23 - Aug. Aries and Capricorn match, aries. This is a very difficult combination of signs when it comes to sexual compatibility. Rulers of Aries and.