My hubs wants me to get with a girl...

So it sounds exciting and all. I can appreciate a woman’s body just as much as a man can, however I’m a very shy person and the idea of putting all of this into play honestly kind of freaks me out. I want to do it for my husband, but I feel like it’s just pushing me a little too far out of my comfort zone. I really wouldn’t want to have to eat pussy so I don’t even know if it would be worth another woman’s time. I can see myself playing with her breasts and making out, but that’d be about as far as I could go. Thoughts? Has anyone done it before and was it more fun than scary?!?