It's no different than saying "I love you" to anyone else.
This question is rather broad, but in general, open communication is best. Tell her you love her.
If you girlfriend is a lesbian then she cant really love you in every way. She may love the person you are, But have no sexual attraction towards you,
I am a lesbian and I am in love with a girl.... Sorry it's over
If she is someones girlfriend and not the lesbian's then she might not be a lesbian. She could merely be friends with this girl. If she is the lesbian's girlfriend then yes she probably is then. :)
Then your a Lesbian?
I'm a lesbian, and I love my girlfriend too much to be honst, it feels great, have fun experimenting too.
She tells you that she is a lesbian.
Be there for her and support her. DO NOT FRECKEN DUMP HER!
That's ok. Maybe Your Bi-sexual where you like both. what about a strap on?
when you asked that question, did you think what you would do if you lesbian? i used to be married to a man ,then we had a divorce and i went with my wife jenny.[ i am a woman by the way.] when we met i asked her if she was lesbian and she said no. i made her lesbian by telling her i really liked her as a girlfriend and then we had sex and made out. Now we have 11 kids. So if you are not lesbian i say, if you have a really close friend that is a girl, then i say ask 4 sex and do it girlfriend! you never know, she might say YES!
men
Well that'd be a lesbian cheater.