Good composite can redeem bad synastry.I am currently dating someone that I kept in the friend zone for a couple of years because I felt zero romantic/sexual attraction toward him. Our love planets(Venus and Mars) make no connection to each other or to planets like Pluto or Jupiter. We even had a venus square Unanus. Yuck... I remember taking a look at our synastry and thinking, not happening! I didn't even bother looking at the composite.
He wanted me to be his girlfriend but I wasn't feeling it and I told him. He didn't run away and settled for being my friend. Friendship with him has been wonderful. We got very close to each other and he's been there for me when I hit rock bottom.
Anyway, things started shifting about 6 weeks ago with the last eclipse in Scorpio which touched his Mercury, my Saturn and his Chiron. My progressed venus is also conjunct his natal sun/jupiter conjunction.
When I felt the shift in the way I felt toward him, I went back to look at our chart and I saw that we had a very good composite, with Venus conjunct the descendant and once I decided to upgrade him from friend to boyfriend, it's been truly great. We have so much in common. He studies astrology too and this is the first boyfriend I've had with whom I can talk astro for hours. Damnit it's wonderful!