Using toys in the bedroom?

Madeleine • 21, just here to keep track of all the things, y'know?☺️💕💕
I recently invested in a vibrator. My boyfriend can be insecure. How can I persuade him to sometimes use this in the bedroom without hurting his feelings? Just cause I don't want him to think that what he currently does for foreplay is not enough, but I also want to spice it up a bit. How should I approach this?