Flexible, customizable, free, gay-friendly, Windows-compatible genealogy software?

Flexible, customizable, free, gay-friendly, Windows-compatible genealogy software? I just noticed that the software I'm using appears to allow only man-woman marriages. (There may be an option I've missed, but that's what it looks like for now.) So I want to know what my options are for gay-friendly genealogy software. Preferably, I would like it to be flexible enough to allow you to define any sort of relationship between people (friends, work colleagues, school buddies, neighbors, sexual partners, kindred spirits, ride the same bus, etc.) and then let you generate classic family trees or other sorts of reports.

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