No, that's not what I wrote or implied at all. An Aquarius or Pisces Sun may have other key planets in the other signs I mentioned. Sag as I wrote is your Descendant, the main sign you are looking for, because that's your own approach to partnership as the cusp of the relationship house. You have an overabundance of fire element in your chart so you will get along best with any of the fire signs, like Sag.
Secondary would be any of the earth signs because of your Moon and Venus. Ideally you will find some girl whose planets are stacked with both elements.
I highly recommend studying astrology in more detail and moving away from any Sunsign pop astrology. There's just so much more going on in any given chart.
http://www.myastrologybook.com/site-map.htm
I recommend
The Inner Sky by Steven Forrest.
Virgo is often concerned with health, medicine and science. Most doctors have prominent Virgo somewhere in the chart -Sun, Moon, MidHeaven, ASC, etc. Virgo is good at analysis, reason, details and boundaries. Society needs Virgos like it needs all the signs.
You like Pisces (Virgo's opposite) but that sign can be passive, evasive, and overly-sensitive. Though as I said, other things factors in a chart can change that.
The "leading" signs are in the cardinal
modality: Aries (cardinal fire), Cancer (cardinal water), Libra (cardinal air), Capricorn (cardinal earth). These initiate. Not that someone has to have their Sun in these to be a leader -any other personal planets will suffice. Or in Leo (fixed fire) -"the king" (or "queen").
Your Aries Sun is 29° in the anaretic or critical degree which changes it. You might want to look that up. And Saturn Rx or retrograde can give a lot of self-doubt and self-worth problems. Without actually seeing a real chart wheel with all the aspects, no one can tell you very much here. See the sticky for making and uploading that at astro.com, start a new thread, and you'll likely get more hits.