How intimidated should I be of my gf's vibrator?

honestly i have a rabbit vibrator, and yeah it feels awesome but an actual person feels so much better. My fiance get intimidated by it also. I get it out and start using it when i am horny and he isn't because I know he will get upset and come "take over the job". I guess that is kind of manipulative but it works. Maybe shes just trying to turn you on. Ask her if she wants you to F*** her. Or offer to use the vibrator on her and then switch to using yourself....