Google has a feature that shows a list of e-mail addresses to "Consider Including" when you write a new e-mail. There is currently no way to turn this off.

People it tries to include on my e-mails:
- my ex girlfriend
- people who are now deceased
- my Mom!

Tell Google you are capable of making your own decisions about who to e-mail and ask that they disable this annoying and possibly harmful feature in Gmail.