Authors:

If you talk about yourself, he'll think you're boring. If you talk about others, he'll think you're a gossip. If you talk about him, he'll think you're a brilliant conversationalist.

Linda Sunshine (2005). “Women Who Date Too Much . . . and Those Who Should Be So Lucky: Happy Dating, Great Sex, Healthy Relationships, and Other Delusions”, p.84, Crown Archetype
If you talk about yourself, he'll think you're boring. If you talk about others, he'll think you're a gossip. If you talk about him, he'll think you're a brilliant conversationalist.