All the time!
“It was supposed to be our first threesome, we’d met Mat on line and he was perfect… funny, handsome and hung. We met up with him, but my husband was nervous and ended up drinking too much. So there I was in a hotel room with this hot guy with the nicest cock I’ve ever seen… What’s a girl to do… sorry honey.” FWL
The first experience is always riddled with doubt. Make sure she knows this is what you want and you'll love her even more for doing this for you.