Try to mention things that you would think he would like, like it's your idea. Sometimes for a guy it's a turn on hearing how his other is also into it so he knows he's not alone in wanting to explore.
OMG man. You are one lucky dude. She looks amazing. Her nipples look so inviting. She def needs to know that she is the desire of many men. I would love to see her in action. Sharing any videos?