I never really came out, because I was never really in the closet to begin with. I didn't show intrest in either gender until my sophmore year of highschool though. While eating dinner with my family one of my brothers asked if I had a boyfriend yet. I said no but mentioned that there was this girl I was kind of into. Cue everyone staring.
Dad: Are you gay?
Me: I prefer the term lesbian.
Dad: /shrug
Mom: Whatever makes you happy, just be safe.
Older Brother: Wait, what?!
Oldest Brother: I knew it.
My partner had a much more difficult time with it than me. She'd been straight up until a few months ago, or I thought she was. She'd actually been intrested in me, and by extension women, for six years. When I finally found out and she told me she was afraid to tell her parents and sister because she didn't know how they'd react. It was rather...awkward, but they were mostly fine with it. Her mother was expecting lots of granchildren, but she understood that her daughter wanted to be happy. Her dad had figured it out a long time ago and her sister was overjoyed with the news.