I am friends with a lesbian couple.
There is certainly a disparity between the two. Martha (the Dyke) is a Civil Engineer by profession and is about 3 years younger than Stephanie who is a Resident in Urology.
I actually met Martha 4 years ago when I was part of my school's student body.
She was intimidating (but I like intimidating women, ) and I started talking to her. I later found out she was really the nicest person by heart. She is very passionate about cars, drives a 1999 BMW 540i 6-speed. We can talk for hours about cars. Funny thing is, she was not a tomboy when she was a kid. She once said that she could tell that people especially straight women call her a dyke on her back.
Steph is more outgoing and her looks defy her age (she looks like 21). Very sweet natured, but can be hard headed. No affinity for cars, drives a Saab 9-3 convertible. Both have been dating (married) for 7 years. It was odd when I came to know about their relationship. It was hard to accept initially. I am not a homophobe, but this was the first time in my life I had met a similar sex couple.
Martha was raised in a military liberal background while Steph's parents are middle of the road, but leaning towards conservatives. But they said it was difficult for both their parents to initially accept them.
We still are in touch despite moving to different cities.
So that is my only experience with lesbians. I dunno if it is good, but definitely not bad.