You're not alone in your snooping—that's why we have an entire chapter in our book on what's in your lover's medicine cabinet. The question is: What to do with the information. You're going to want to bring this up before you have sex with him, but not RIGHT before (or you probably won't end up having sex). I'd come clean (no pun intended), tell him you saw the meds and talk about it before you get naked with him. Yeah, it's embarrassing to admit that you snooped, but—trust me—he'll be far more embarrassed than you are.

Lori Gottlieb is a regular commentator on NPR’s “All Things Considered,” “Weekend Edition,” “The Tavis Smiley Show” and “Marketplace.” She is the co-author of I Love You, Nice to Meet You: A Guy And a Girl Give the Lowdown on Coupling Up. Her monthly relationships columns appeared in Mademoiselle, and she currently writes the irreverent “Singles” column for the Los Angeles Jewish Journal.