Deep breath. The human mind and the human body, develop concurrently, from birth. Sexuality, not sex, Sexuality, starts on day one, moment one, breath one.
Stay calm.
Think about what a baby is learning to do, that later, will become relevant to sex. Trust, attach, bond, love. Later, after you understand what privates are for, that's going to become relevant to the act of sex, because children born to parents who can attach, bond, and love, do better, and the human species continues. It's all connected, but attachment, bonding, and love are all an infant should do, so don't let it freak you out to hear someone refer to that, because that's all they mean. Now, toddlers can masterbate, and have been known to, but it's more like they've discovered a new toy.
This also explains why some people tingle, and some don't. If it tingles, it's stuck to the part of you where attachment, bonding, and love are, and the genitalia, if not it aattached only to the very early part of your psychosexual development. It still is what it is.
I'll give you an example. If someone were to bottle feed my partner, who was not me, without my permission, I would go to jail! If someone who was not my partner, tried the same with me, I'd go to jail.
Why does this feel like cheating? Because it is, to someone like us, and it is different. Fetish and kink both mean difference. A fetish replaces a partner with an object. A kink, a partner is still involved. Fetishes stick to us before puberty. Kinks do so after puberty.