The study employs a double-blind, within-subject, placebo-control design. Women will be administered with the same drug twice (oxytocin or placebo) respectively the fertile and luteal phase followed by a MRI scanning. During fMRI participants will rate men's attraction based on their facial pictures of average attractiveness associated with compliments of different combination of form and topic. Each male face will be paired with two sentences of the same kind. After the fMRI participants will recall the judgment followed by a memory test during which they have to indicate whether the they have seen the face during scanning (old) or whether it is an unknown face (new).