Help me draw girlfriend in to fantasy: bigger dildos & later chastity

Hi all. Long time lurker here looking for some advice to help me to convice my girlfriend to keep trying larger vibrators and basically move her deeper into the fantasy. Apologies if I ramble at times but this is one of my first real posts.

At the moment I use a rampant rabbit platinum on her (see pic) and it makes her cum very hard. I love fucking her really hard with it and after 3 or four orgasms she will lube me up and let me slide into her where I cum very quickly. I love this because her pussy feels incredible after I have fucked her really hard and I enjoy the offense of being smaller (at 5") than the vibrator and my cock sliding in and out of her so easily. I also enjoy the offense of this making me cum quickly and hope that me cumming so quickly helps cement the vibrator in her mind as a necessary part of every sex session due to its superior size and ability to make her pussy cum.

When we first started using this vibrator it hurt her quite a lot and she was pretty reluctant. Recently however she has been enjoying it much more and now loves when it is all the way inside her or fucking her very hard. She often begs to be fucked harder and deeper. She also likes telling me how big the vibrator and how much her pussy likes it when I am inside her afterwards.

She says that she thinks about me fucking her when I am using the vibrator on her but another thing I would like to try (to go along with the offense angle) is to get her fantasisng about being fucked by someone else. I am not sure we will ever go down the actual cuckold route but I think getting her fantasising about it could be hot and make for better dirty talk during sex.

Given these developments I would like to start trying larger vibrators both to stretch her a bit wider and penetrate her harder and deeper. Does anybody have any suggestions on
a) vibrators,
b) how to talk to her about a larger one
c) any tips on cementing the vibrator in her mind as essential for sex as discussed above
d) broaching the fantasising about another man topic, maybe through roleplay?

If things go well with the above I am also thinking about asking her if I can video me fucking her with the vibrator and then posting it to a website like youcuck. Hopefully I can get her to beg to be fucked hard etc very vocally. If people want I could also do a comparimister shot of my cock vs the vibrator.

I am going to make a second post discussing my hope to bring chastity into the relationship as well before making a final set of posts with some of my favourite cuckold pics which could hopefully (to a certain point) paint a timeline of where I hope to take our sex life.

Thanks for reading

Hi again and thanks for reading. The second side to my fantasy is a bit of chastity roleplay. The idea of her controling my cock in such a literal fashion has always turned me on and so I was hoping to introduce her to the idea. I am worried about her thinking me weird though and would be devastated if it negatively affected our relationship in anyway - she likes me being a big strong man, I wouldnt want to put her off (plan to marry etc).

I thought the easiest way to do this might be to introduce it as a kind of joke. She has mentioned she is worried about me cheating later on (something about young women flocking to successful older men, something I may be one day as a city worker). I was thinking of saying something along the lines of 'well if you were really worried there are those crazy male chastity devices etc etc', and subsequently admitting that I actually find the idea of it quite hot.

The chastity would tie into my first post by making my cock seem that bit smaller / cuter to her and therefore push her to the larger powerful vibrator even more. Please see pictures 1, 2 and 3 below.

If there are any realistic recommendations to achieving this I would be grateful to hear them.

These next four pictures represent the next stage where she is enjoying the size of the vibrator and the fantasising about being fucked really hard by a large, think, powerful and fulfilling cock. There is a bit of cross dressing in no5 which is not part of my fantasises in anyway, I just love the idea of having to satisfy her with the vibrator before she will remove my cage and allowing my small penis inside her for the 20 blissful seconds it takes me to cum.

These next pics are advancing the fantasising to the point where she is driving the fantasising dominated by the smallness/lockedupness of my cock whislt loving the being fucked hard aspect. Number 9 makes me want to come just looking at it with the large black cock contrasting against the beautiful white skin.

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9

Final set of pics. 10 is how i feel when I use the vibrator on her kissing her at the same time and stuff, all that matters is how good it makes her feel. Fantasise a lot about it happening for real but not sure Icould ever do it. 11 is her after that barrier has been crossed receiving a really hard fucking and 12.. its a beautiful picture, would I be about to receive my first creampie or told to leave the room as they cuddle and his cum settles deeper into her belly?

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Your ideas to bring up the subject seem good. You may also want to send her the URL of the angelfire chastity site... Written by and for women... My wife had me in chastity and was fucking another cock within a month of reading it! Good luck!