Had a pal who was a cop in CA. Domestic violence calls were always the riskiest thing for him to respond to, but he said homosexual domestic violence calls were absolutely the worst. Male or female.
Two gay men or women will just beat each other until they're covered in blood, then they'll resort to whatever weaponry is at hand. EMTs are almost always called for one or both who need medical attention. Everyone responding to the call ends up wishing they were wearing a hermetically-sealed environmental contamination suit.
Three things he says were common in all homosexual domestic violence calls:
1. Fight always always ALWAYS started over infidelity. Every single time.
2. Both parties will be substance abusers. Some kind of drugs will be found at the scene almost every time.
3. The person who called the police or dialed 911 was never one of the two homosexuals. It's always a neighbor who made the call, or a passersby, or one of the actor's family members.
My dad was a police officer and he said the same thing nearly thirty years ago.