I saw your post on another thread and thought I'd try to answer your question. I'm a straight female but before now, all my partners felt like vibrators were the enemy. I'm assuming you need the clitoral stimulation, as opposed to you specifically needing a vibrator? Or is it that you've used vibrators so frequently that you can't cum by using your fingers? There is nothing at all with reaching and stimulating yourself whilst someone gives you oral or is penetrating you, or in any other way if that is what you enjoy.
A couple of months into my relationship, I was at my home and I briefly mentioned I had a box of toys after watching a program on TV which related to the topic and I turned it into somewhat of a joke. This piqued my partner's interest but he didn't say much about it because I hadn't asked. A couple of days later, I asked if he minded me using it during foreplay - when we kissed, caressed and worked up to the main event. He was fine with me using it on myself but felt a little envious especially as I guess I was a bit like you at first, I found many times I wanted to finish off with a quick buzz but for me, it was more of a mental thing than physical, after me using a vibe frequently for a couple of years. So after a while, I told him I wanted him to learn about my body so I showed him how I liked it and he experimented by using it on me. It was a journey, as much as I had to learn about my body as a young woman and with previous sexual partners, he had to educate himself about my body too - as I did with him.
Long story short: You have two options, talking about how you like your body worked beforehand, which is perfectly normal. You could talk about your best sexual experiences and mention that you like your trusty bullet vibe or keep your vibe near by and ask whether she minds if you use it, when you're engaging in foreplay. You could explain it after. The way I see it, if she isn't keen on you using it and understanding, then are you sexually compatible? I wouldn't see it as a deal breaker but I guess I'd see it as a challenge to see if I could wean my partner off of having to use it regularly.