When I masturbate I always use a vibrator. Can I become dependent on it?

Physically you won’t become dependant. You can always use your fingers to get excited. But you may become spoiled by always using a vibrator, getting used to the intense stimulation it offers. You can also get dependant psychologically, thinking that the only way to become excited or to come to orgasm is by using a vibrator. Avoid this by masturbating in other ways: using your fingers, rhythmically pressing your clitoris against an object or using the shower massager. The vibrator is an excellent instrument to learn how to orgasm. But once you know how your body works it’s good to vary the way you masturbate. If you develop various methods to stimulate yourself and you can climax in many positions it becomes easier to come during sex. So don’t use the vibrator all the time, but experiment and try new things.