Yes, this is because your Sun is in the 8th house, the traditional Scorpio house. When a true horoscope or astrology chart is cast, we find a rising sign or Ascendant. It just worked out that yours is likely Aries, unless a house is intercepted. Plus you have a Moon in Scorpio, which rules your emotions, and Venus, which rules your love and social nature. So even though you are Libra, with an Aries ascendant (I think, I don't have enough info), the three "pieces" you have in Scorpio will cause your personality to have a strong Scorpio influence. So you are strong-willed and ambitious, and most likely achieve your goals. You are a loyal friend or partner and will help anyone you think is weaker than you or just needs help. The Libra sun warms you up a bit and makes you a little less serious. When you are interested in something, you will research it to death; I have my Sun in the 8th house too!