How to tell my boyfriend my kinks without sounding like im okay with anything

I tried to tell my boyfriend i was okay with him tossing me in any position he wants but he said "i think youre perfect the way you are" i dont even know how that relates to me saying i was okay with manhandling. When me and him are sitting next to eachother on the couch or just walking together he likes to pull my hair, but like in a sensual way i think cause he grabs it from the base of my skull and just gently moves my head. I said he could pull my hair in doggy but I feel like he didnt even read the text, he responded to the text above it about whats for dinner and never went back to it. Another kink i wanted to tell him about was filling me up with his cum, i want it to be leaking out. When we had sex for solid 30mins he told me he only came once in that amount of time. Am i doing something wrong?? He's on the older side, met him last year and fell in love with him before either of us told out ages, what can i give him to increase both of our pleasures? Ive told him he can ask me anytime if he wants sex or head he has a 99% success rate and he just sent a laughing emoji. So i dont think he took it seriously. I dont want to tell him im into free use tho cause he did try to convince to do it in the bushes, during the day in a park. Im not a public person, not my thing. 😅