Just look in her eyes and let te eyes do the talking
when she's sleeping, put your nuts on her forehead, and when she wakes up, she'll get the message
Take her on a date and whisper in her ear that you love her
Well I love my sister and all my friends, and I usually say it in a way like this: "Girl, you are the coolest goddam f*cking c*nt I've ever met. You're my comrade, you know that, b*tch?" I'm sure they feel the love.
Say it at a time she will know u really mean it. Don't let her think its to make her have sex with you. If this is the first time ur saying it, and u mean it, it will not b involved with sex. That's what happened to me anyway... It worked.
I. Love. You.