Can I lose my virginity during lesbian sex?

I was talking to my friend about how I might want to have my first time having sex with my girlfriend. She kept on telling me that I can't really lose my virginity because of the no penetration. I kept telling her about a thing called fingers, strapons and more. I keep on telling myself that she is wrong every time I think about it, but now she has me second guessing myself. Is she right?