If the studies suggesting that oxytocin connects to attachment do show a cause and effect, then it may be the oxytocin, boosted by nipple stimulation or by stroking, that can make you think your lover’s otherwise annoying habits are really cute. Dopamine is the prolactin inhibitory factor. And prolactin, which will make you finally get up out of bed to get some laundry done, or to do some other work, is also processed in the hypothalamus