And there's nothing wrong with that, Jim. In that situation, you could ask for help from your partner (because she would be more versed in how to please herself which should be foremost before ever moving on to a threesome), then if you get to the point of a threesome, work with both ladies having open conversations about what gives them both pleasure. Using conversation is vital, pleasure doesn't just "happen".

To my last point, if that's how you feel about it going in, then no, it wouldn't be. You have to enjoy your own company at least a little before anyone else can <3