And you thought dating was tough.
There may be 50 ways to leave your lover, but I'm amazed how uncomfortable someone can be leaving one instructor for another. Some students won't tell a group instructor they are taking privates with another teacher.
Well, get over it, because this is old news to your instructor. They have probably been with other students all along; they just pretend you two are going steady.
They know at some point you'll have wandering eyes. From your first lesson, they are aware you are just using them and will leave them sooner or later. Just like dating, some instructors look great yet once you are gazing into their eyes, you realize it's never going to work.
Take the band-aid approach: As soon as you know it isn't working for you, rip it off and find someone else. If that seems a little harsh, you can use the famous "No... It's me, really... you deserve better students and I can't give you what you need." (Meaning: I'm not going to pay for more lessons, since I hardly even know you anymore!)
Alternately, you can actually have two instructors at once, one for group classes, one for privates. Yes they will conflict at points, so don't do this the first few months you learn a new dance. After you have some solid experience under your belt, you can deal with the minor differences. It may be just logistics; one instructor is closer, or teaches a night that works better for you. It's really all about, "what works for you?"
At some point they will find out you are working with someone else, but so what? They have been through that before because everybody goes to someone else at some point. It's OK to be a "player" among instructors. They may not tell you, but they knew all along you were using them.
If they get upset, make you uncomfortable, or treat you poorly after you leave, be sure to tell all your friends because that instructor doesn't deserve more students. Good professionals realizes that some student/instructor combinations just don't work. They don't own you. They have no right to tell you who you can and cannot see!
There are multiple learning styles and the better instructors know how to teach to the strengths of their students. But even a "great" instructor may not be right for you, because being a great instructor for one person doesn't mean their teaching style fits your learning style.
Remember! You focus on your needs!
The instructor has been through this before and will forget about you as a student long before you stop feeling guilty. Any decent instructor has been quietly seeing others behind your back the whole time you've been together. Some even make a show of it, but they don't want to hurt your feelings either. Of course they will miss you, and if they are really worth it, you may be back in the future for some tune-up flings, but that is totally up to you!
It's your dime and your time, so once the relationship isn't working, shop another until you find the right fit for you. Sometimes you just need someone new in order to grow or multiple instructors are the right fit for you.
They all hope you'll stay, but they will get over it much sooner than you when the time is right for you to move on.
How Many Instructors (Part 1)
My sister was with two men in one night. She could hardly walk after that.
Can you imagine? Two dinners!