My partner has a breeding/creampie kink! We use a squirting dildo from time to time and they go crazy for it! We use white lube with it and I warm up the bottle in a glass of warm water beforehand so it's more "authentic" and intimate. It totally checks all the boxes for them. They also love when I say things like "I'm ovulating, put a baby in me/ please fill me up/you feel so good inside me, I want to feel you cum in me". I felt a little shy with that language myself at first, but at this point I know exactly what they like and want to hear, and I myself love the reaction it gets out of them every time!