Shoulders hunched, face down, arms bent, hands centered. The religious observance of instant contact and response is inescapable. Still, rules must be set.
Any time a gentleman is in an intimate setting, their phone should be obsolete. Whether with a friend, parent, girlfriend or client, one should never text, BBM, answer a call, or send an email, while holding a conversation. It is the true form of a mental middle finger. Finalize all exterior conversations before said rendezvous. Put the phone on vibrate and ignore it. There is rarely a text that is worthy of being rude.
Also, no more cell phones on the table. It shouts “Fuck you, you’re kind of important” to the other person.