I think it's a real shame he get's jealous and competitive with a TOY. Can I ask a personal question? Does he bring you to orgasm every time? Probably not, as women's orgasms are complex and mysterious. This can make a guy feel inferior and useless (and thus causes many women to fake it to keep their guys happy). He just needs to get over it. But that won't happen very easily. Maybe you can help.
Normally, I would say "boot him" if he doesn't support your desire to express yourself sexually (or doesn't even support your right to an orgasm with a
vibrator). But it sounds like you want to keep him. Therefore, you need to broach this issue with him. Try to talk to him AWAY from the bedroom about how you'd like to play with him. Maybe over a candlelight dinner at home, or in a dark corner of a bar where it can seem naughty to whisper in his ear. Make it sexy, and not clinical.
Start with some simple things, like asking him not to move while you ravish him a half-dozen different ways. Then maybe introduce a blindfold. Put the focus on him, so he doesn't feel like he has to be "original" since you are the one doing it. I'm sure there's lots of other suggestions out there to ease him in.
In the meantime, away (far away) from the bedroom, talk to him about orgasms, about how they are different and challenging for women. About how the
vibrator is not competition but assistance. Don't make it threatening, but more enlightening. Reassure him that you are thrilled by his C***, but your body responds in different ways than his. And tell him it would make you really hot if he would play with you, and the toy. Have this conversation over and over again. In subtle ways and open ways., keep the dialogue going. because if you don't talk about sex and this issue, your whole relationship will suffer.
And in the end, if he won't meet you halfway, you have two choices. Surrender to a boring life of missionary sex and insecurity. Or dump him for someone who's willing to respect your needs and desires.
BTW, I am a lesbian. I can assure you that each woman comes in her own way. I've been with women who simply can't come without a
vibrator. I've been with a wiman who couldn't come unless she was face-down, blindfolded, with me cussing in her ear. No shame in however you like to play the game.