I'm romantically attracted to a combination of my big 3 and the sign that is on my DC.Cancer Rising
Gemini Sun
Pisces Moon
However, I am not attracted to other Gemini Suns of the opposite sex. But they all have Gemini placements in their personal planets (e.g. Mars or Venus) or they have a Gemini DC.
Watery placements are VERY important to me as 2 out of 3 of my big three are in water signs. Cancer is my favorite, Scorpio is 2nd as my Moon is in the 8th.
Saturnian qualities are also important because my DC is ruled by Saturn. I need a man who man who is stable, secure and hardworking.
I always seem to meet people that are Virgoan in some ways (opposite my moon sign). I do not like their nitpicking qualities but I tend to form close relationships with these people. I guess I like them for their helpfulness, sincerity and humbleness. They are also reliable. I have very little earth in my own chart so my need for someone reliable is being amplified.
Angles are hugely important, too. Look at the signs on your angles and you will find the people you click with or are attracted to in some way. Opposite signs work too.
Eg. Cancer, Capricorn, Libra, Aries are on my angles. I am Cancer Rising, Gemini Sun and Pisces Moon. Therefore, I have affinity with these signs and their opposites:
Cancer-Capricorn
Libra-Aries
Gemini-Sagittarius
Pisces-Virgo
One example which illustrates the attraction above is my fiance. He has:
-Libra Rising (our angles conjunct)
-Leo Sun in the 10th (Leo is not featured above but I have a Leo true node in my 1st. His Sun in the 10th also makes him hardworking and reliable - Capricornian qualities)
-Sun conjunct Saturn (this further emphasizes his Capricornian qualities)
Virgo Moon (opposite my moon)
Gemini Mars (conjunct my Venus)
Cancer Venus (parallel to my AC with an 8 degree orb)