There are numerous sexual situations, however none of them are graphic, and nudity is rare (mostly male). The themes include cheating, masturbation, having a baby. Two attempted rape scenes, including a gay one. Some fairly explicit sexual dialogues and references are heard.
A woman masturbates while laying on her bed. She is fully clothed, only her hand is seen inside her panties. The same woman undresses in front of a window, while a neighbour teenage boy watches her from his room. She remains in her underwear, then takes off her bra too (not seen).
A married couple kiss a few times throughout the series. They are seen making love once: both are naked, but only the man's bare chest is seen (the scene has no explicit detail, only moaning). In numerous other instances the husband is seen shirtless (for example in bed or after a shower). Later on, he has to fill a test tube with his sperm, and tells his wife that he doesn't want to do it alone; they kiss and are implied to have sex. In another episode, the wife sits on her husband's lap and they kiss passionately in front of a man.
A girl flirts with a young man on a couch; she provokely tells him that she noticed he got an erection. He takes her hand and firmly puts it on his crotch (they are fully clothed).
A young man tells a girl's father that "if she is old enough to bleed, she is old enough to be butchered".
A married woman has an affair with a young man. She gives him oral sex in two occasions (offscreen).
A girl kisses a young man. The same girl kisses another man later on.
A teenage boy and a teenage girl kiss and are implied to have sex.
A teenage boy forcefully kisses a woman; she stops him but later they have sex. They are seen in bed with the woman on top, moving and moaning (no graphic nudity, only the boy's chest and a side view of the woman's breasts). They both climax, then the boy then asks her to do it again; the woman checks his erection under the sheets, then agrees. They kiss and are implied to have sex again.
A curvy 23-year-old woman with a prominent cleavage acts provokatively towards a young man. She licks her lips, unbottons her dress, touches her crotch (offscreen), then makes him smell her fingers. The girl's cleavage is always exposed when she is on screen.
A young man attempts to rape a teenage boy who is dressed up as a girl (make up and wig included). He rips the boy's pantyhose and takes off his belt, but is stopped by the boy's father. They later are seen undressing to change their bloody clothes.
A man forces a woman to have sex with him in order to keep her secret. She changes her clothes (offscreen), then he attempts to rape her. He stops.
A gynaecological exam is about to take place, but then the doctor stops; it is clear that he is too aroused to do it. The exam was most likely just an excuse to take a look at the woman's vagina, so she is quite shocked and angered.