Only accept invitations that would discourage long, deep talks. If long, deep talks come up, be evasive and keep it light. That will force him into making a long, uncomfortable speech, which he probably won't. Have a friend over at your house at the time he's scheduled to drop by also helps keep it light and fluffy and SHORT, yet open. You don't need approval to have a friendly, chatty friend over when you know they're stopping by.