You're a lucky guy. Hang on to her, it's rare. Took my wife 3 years before she decided to fuck other guys. Now she has a regular BBC that I watched her with, but that situation where she goes out and fucks and comes back home is the best. The last time this happened for me was a few months ago, and I told her I would go down to a local pub while she played alone at our house. The anticipation and unknown was really hot. She sent me a pic of him kissing her neck when he got there and 2 hours went by and she text me that he had left. I couldn't wait to get home to feel how wet and loose she was. To answer your question it's a lot of pacing and anxious to hear the stories from her and how much she likes his cock in her.