Why'd he get this? 10 points?

[ashley]

So i know my boyfriends email and password, we have eachothers and sometimes my phone goes off when he gets a email which is weird, but, he got a email from twitter saying "people you may know, someone you may know just joined twitter!" And it's his ex. He doesn't have her contact, or any contact with her, so why'd he get this email from twitter? I'm really curious

[Terry]

He's probably following people who follow her too. I think that's how twitter finds people you may know. Don't think too much of it