I'm a cruel, hard heartland

okay here's my long answer.

clark kent is a devoted man. honestly, i think as long as his partner is enthusiastic, he'd be willing to try a LOT of things at least once. he's got a lot of love to give, and any opportunity he can take to pour out his affection is an opportunity he will gladly accept. and, for me personally, i think clark sort of veers on the submissive side romantically and sexually.

that isn't to say he can't take initiate and be a bit bossy if he wants to, but you don't canonically marry a woman like LOIS LANE if you're a total alpha male in the bedroom.

he would absolutely love love love feeling treasured and spoiled by his partner. being tied up and kissed all over would make him go insane. i think he would just love to be able to turn his brain off, surrender control, and let his partner sort of guide him around and use him however they want to. and it's extra hot because bondage is entirely just a mental thing for him. like he can snap those ropes off instantly if he wants to, but he plays into it, and i think that Play aspect would be really enriching for him.

he would looooove getting degraded. now i must make a distinction. degradation =/= dehumanization. i don't think he would want to feel OBJECTIFIED. he wants to retain agency and autonomy, and feel safe in his partner's hands. he would not appreciate just outright bullying or insulting. but very light teasing i think would make him very Horny:

"you came so much. is this all for me? such a good, good boy. you look so good all tied up like a little present. you can keep going just a bit longer, can't you?" <- shit like that

or in maud's case, i think she would relentlessly tease him for like, popping a boner in public. or for staring at her butt. and she'd bring it out during sex just to get him flustered. like i think he wants to get FLUSTERED, you get me?

and as for the breeding thing: i feel like. this is tricky to word. i think he is probably mildly embarrassed to admit it out loud, because it probably symbolizes a bit of an antiquated ideal but like. let's be honest. clark kent really really really wants to start a family and provide for a household. he is a provider. a protector. it's not about LEGACY for him. it's not about OWNERSHIP. it's about caretaking, and nest building, and wishing with every fiber of his being to pass on what his parents taught him as a means to memorialize them and love them.

whether or not his partner actually wants kids is not something i'm gonna get into, but i think even if contraceptives are in play, or if getting pregnant is just absolutely impossible, he would really love just playing into the fantasy of breeding sdjfksdkg. it would scratch his little brain so good. being able to pathetically hump into you and fill you up. i think it would be Awesome.

scent play. superman probably has super smell right? he would loooove his partner's scent. he'd get all up in there. huffing and puffing and snorting that shit up. i think really intense perfumes/colognes/soaps would irritate his senses a bit too much, but subtle aromas that can sort of naturally complement his partner's natural odor would drive him CRAZZZYYYYY. he'd find every opportunity to get real close and steal a little sniff.

also he'd love leaving marks on you. hickies mostly. i think if he left genuine bruises he would feel really really bad and would need a lot of reassurance. but if you wore his hickies around without shame??? bingo. badabing. gabagool. he's probably really sad that you can't reciprocate and leave little marks all over him, but lipstick marks would fit the bill nicely enough :)))) smiles

also semi-public sex. i think straight up public sex would probably noooot be what he's into? depending on location. but the inherent risk and taboo of fucking somewhere semi-public would kinda rile him up im not gonna lie. at work in a closet? in the car in an empty parking lot? out in a fucking, idk, corn field somewhere? actually i think stargazing sex would make him Genuinely Cry. something about being able to stare up at you and admire your face framed in the cosmos (i think clark thinks space is really neat, but that's like, a whole other essay) would make him break down into tears. and he'd babble out "i love you" over and over.

i can think of more but this is just what i could come up with off the top of my head. ......