I have the fantasy of sharing her with other men, we've fantasized during sex about it before, and lately she's confessed to fantasizing about being gangbanged by me several men, she doesn't say she's ready to make it happen one day but she loves fantasizing about it with me, do you think her spreading her pussy even more with a realistic dildo could lead her on the path to fulfilling the fantasy of being taken by another man than me?

About 1 month ago we discovered the pleasure of spreading my girlfriend's pussy, I started with 3 fingers, then 4, then 5, stopping before the phalanges. I told her I'd like to spread it more, she'd love it if I spread it with a dildo.

Do you have any recommendations for realistic or non-realistic (preferably realistic) dildos with a soft material?

But above all, knowing that I'm retracting my 5 fingers (but not the phalanges, so no fisting for the moment) and that we'd like to spread her even further, what size should I get?