Orihime and Rukia with micro bfs!
Orihime is by far the safest girl to be around, her skin is very sensitive so she knows when her boyfriend got caught beneath her; she is super delicate and can always pick him up without using too much force. Needless to say, she takes care of her S/O all the time, to her it doesn't feel like a chore at all, she actually enjoys it.
When being intimidated she likes to be in public, letting him go anywhere he wants to, letting him satisfy his needs and her voyeurism kink.
She prefers to let her partner live withing her, since with her powers she can let him live in the most dangerous places in her body. Even if she is asleep, her powers will protect him from may harm that she may inflict him while trashing around while she sleeps.
Rukia is a mess, and when she has to take care of someone that vulnerable, she will basically have a heart attack everyday. First thing she does is build a house on his scale, and the second thing is to draw a micro version of herself to put inside the house, where she will control it with a string. Naturally, she believes it's way too dangerous for her precious boyfriend to interact with her in a day to day basis when she can squish him with her lips during a kiss, so she will interact with him using the drawing, and... She will get way too carried away with it to be honest.
Any friends of hers or her boyfriend's that aren't small will be force to use the same drawing mimic she uses. Hell, she will get really sad if her bf doesn't want to be intimate or even have sex with her bunny drawing version. But after a few hours she will relent and let him stay with the real her, even with all the dangers included. Because if she falls asleep, she trashes around just like Orihime, but she won't feel him at all and she won't have any subconscious to protect him.
But still, she doesn't care of she dates a human or a plus... But she will miss the whole toy house, she will miss it a lot