I've trained my wife's tits. They expect strong sucking every evening about 10 or so. She gets antsy without it. What a hoot! And this is someone who was perfectly happy without sex not long ago. We don't always have sex, sometimes just some nice friendly sucking time. She's even starting to produce just a little tasty milk. Yummy.
My girlfriend also sometimes gives just a taste of milk, even though she's never had kids. Not interested in lactating, so I don't tell her she's starting to produce a little. If I could see her every day - wow! Her tits are really firm with small nipples. Very different. Same response though - after 15 minutes, near orgasm just from sucking.
