Love... Or Something Like It.

Zappa curiously says of his family that they are his only friends... This tells us a lot on what kind of man he was. Or at least, how he thought of himself.
He must have not been that bad, since a beautiful groupie named Gail fell in love with him and his dubious hair/goatie due. She saw more in Zappa than the image.

In fact, Barry Miles recalls Gail's first impression of his husband-to-be as a dirty-looking, weird-smelling guy. They met in 1966 and a that odd appearance didn't stop them from getting married a year later, in September, while she was pregnant with their first child.
Zappa himself said that they only married because of their religious families and background. It also would have been hard for Gail to be admitted in a hospital for her delivery if the child she was carrying was to be born outside the bonds of marriage...
After a not-so-fruitful first wedding, Frank Zappa finally found the love of his life in the person of Gail. Their union would be responsible for the birth of Moon Unit, Dweezil, Ahmet and Diva. Four kids (with weird names, yes) and different talents.

I'm guessing that, in a way, they both found themselves attracted to the originality of the other... and their love for music, obviously. These two shared an idea of the world that not many people could have followed. Today, Gail still manages Zappa's image and musical heritage. She had a tremendous respect for her husband's work and would do anything to protect it. Zappa's legacy has nothing to worry about.