Well you have to basically look at it as that you're not H and W anymore but dating all over again. Crazy stuff, but then, it's a crazy world. Use each opportunity to be plesant and fun and cheery; don't let him see you sweat. Be the person he originally fell in love with. Use those contacts to show him, through action, of whatever changes you've been making that make you the better choice. I'm surprised though that he continues to see you if what you're doing is bringing up your marriage and OW. That usually doesn't get you anywhere.