Twilight Sparkle thought friendship was supposed to be about picnics and songs, not fights and hurt feelings. She never sent a report about the reality being a mix of both, but she got close a few times.
You meet a pony in a bar and talk about how on earth they get anything done with their hooves, and how they get anything done with their hooves on Earth. And maybe you flirt a little. Okay, a lot.
Twilight shows up on Rarity's doorstep in distress, which isn't too unusual. Her admission that she's come to Rarity about romance is, however! Naturally, Rarity is all too eager to tutor her in love's ways. It's only practice, isn't it?