Complex sentence: Foster attempts to gain Gaius' confidence via professed admiration and seduction, and, despite her initial objection to actual sexual relations, episode 4x03 ("Six of One") shows Tory and Baltar engaged in ardent intercourse, after which she weeps.
Split into simpler sentences: Foster attempts to gain Gaius' confidence via professed admiration and seduction. Despite her initial objection to actual sexual relations, she has sex with Baltar after which she weeps.