Double Ds

I start work early so have to take my dog out to pee at about 4:30 - 5:00 am. Being here in Florida I often will be in a nightie but usually with a jacket over. This one day, got up late and rushed out with my dog in a nightie no jacket or housecoat on. Of course I’m not wearing undergarments and the cool breeze made my nipples very erect. A younger man in his mid twenties was also out with his dog. He approached me, we talked and then he made comment about my double Ds and they turning him on. Now I was taken aback but he asked for my number and he called me later at night. I’m not fooling myself into thinking I’m hot because I am not. I’m 5’3” and 170 lbs and yes my boobs are very huge and my body is hour glass but that’s about as positive as I could be about my looks. We went out for dinner and I let him suck on my tits in the car and finger me. It has accelerated in the last few weeks where he comes over and fucks me. Nice looking man, in great shape but he is perverted. He insists I not wash myself saying he wants my scent on his face all day. He has a real love of sucking on my toes, eating my pussy and eating my bum. He loves it! Last night, after much insistence on his part, I let him do anal intercourse on me. My first time ever. It wasn’t unenjoyable but his fixations with eating my bum and sucking toes and now his want to have me eat his bum as well (which I will never do) has me concerned. Is it me? Is he perverted or am I a prude?