What you have asked me about is called your Trinity. Sag Sun people are easy to get along with, they sort of go with the flow. They love to be surrounded by friends, dogs, kids, family, everyone, and it never phases them. You always feel at home or accepted by a Sag. I find there are quiet Sag people and talkative ones. You may be one of the chattier ones with the Libra rising. Sag people are ruled by Jupiter, so you have big ideas and do everything in a big way. You tend to be lucky. Sag rules the 9th house, so you are interested in education, philosophy, travel, and religion. You may fall in love with a certain country or culture, or marry someone from a different background.
The Moon rules your emotions, and is also in Sag. This is an independent sign, so you may not be so in a hurry to settle down. You want to travel and have fun first. You probably want to be in a relationship, with Libra rising, but not one that doesn't allow some freedom. You won't rush into a relationship, and if you do, may travel and wait or postpone having children to later. You have a warm heart and are very generous.
Libra rising is the way others see you when they don't know you well. It's ruled by Venus, so you are the peacemaker in the group. You are well liked and do have some leadership ability, since it rules your first house, a cardinal one. You like nice clothes and care about your appearance, though maybe not as much as a Sun sign Libra, you have all that Sag. As far as love, I like Fire signs for you, Aries or Leo. Air would be good too, Gemini (sexual tension), Libra, or Aquarius.