I'm sure there are guys who find a woman who represents their physical ideal (or close), ask them out and wind up marrying them. This is not typical, and even when it does happen the nature of male desire is that you get sick of them after a few years anyway. Or they gets old, their shape changes, they lose weight (or gain it if you're a normie), etc.
I second the idea you keep your mind open and put yourself in situations where you'll meet all kinds of women. When it clicks you won't be questioning the size of her tits or her fat distribution. You'll want to be with her for her and sexual desire will grow out of that. It will be more sustainable in the long run anyway.