It's always nice to get compliments about having a good looking dick. If it is a turn-on for her, it's kinda hot to hear about it! Some might say that it's a shallow way to feel, but any compliments will normally make a person feel good, so why not about your penis? It really doesn't cross my mind to ask about how I compare to past lovers. I would far rather have nice comments about how I use it than how big it is!