The gang comes together for a memorable prom with a fitting theme: "Summer of Love." But with someone important missing... it feels incomplete.

On their last day in Paris, Nick introduces Charlie to his dad. Elle and Tao make it official. The truth comes out at a party that's full of surprises.

As the boys and girls schools meet for a Sports Day, Charlie's on the brink of breaking it all off with Nick while Elle and Tao share a special moment.

Rumors spread when Charlie wakes up with something on his neck. A group tour of the city's most famous sights reveals more than one major secret.

As his relationship with Charlie matures, Nick considers coming out to Imogen — but it's a lot harder than he expected. Elle tries flirting with Tao.

Charlie seeks medical help and begins the long road to recovery. Nick starts keeping a journal, and Tao makes a video to support his absent friend.

Sparks fly at a birthday party where Nick's friend Tara confides in him. Inspired, Nick shares his feelings with Charlie — and they grow even closer.

On a school trip to Paris, Nick and Charlie try to keep their relationship under wraps. Elle and Tao reconnect at a museum. Imogen stands up to Ben.

Elle keeps big news from Tao, Ben pressures Charlie to forgive him, and Isaac opens up to James. Nick invites Charlie to a tense family dinner.

Nick decides whether he should skip his date with Imogen for Charlie's birthday. Tao vows to protect Charlie from Nick and his rude rugby friends.

With Charlie's grades slipping, his parents tighten the rules. Tao's jealous when Elle makes new friends. Nick's older brother invades his privacy.

Nick tries to come out to some of his teammates at a bonfire party after exams. Tao plans the perfect date. Things get weird between Tara and Darcy.

It's a new term, and Tao misses Elle now they're at different schools. Charlie plans a birthday surprise for Nick, who's still worried for his boyfriend.

Elle struggles to settle into her new school as Charlie and Tao are convinced Nick is straight. Nick starts to question his unfamiliar feelings.

Tara makes her relationship official on social media, but she isn't ready for the side effects. The friends try to play matchmaker with Elle and Tao.

After both Nick and Tao get into fights with Harry, Charlie worries that he's making Nick's life too difficult and straining his friendship with Tao.

Nick and the girls go on a road trip to look at unis, as he tries to decide whether to stay near Charlie or move away. Sahar's band plays at a fete.

On holiday in Menorca, Nick worries about Charlie, who is struggling more than ever. Isaac starts to feel like a third wheel around Elle and Tao.

As the school year comes to an end and the students begin thinking about their futures, Charlie and Nick struggle to find a moment alone together.

It's a tough Christmas for Charlie, and his family — except for Tori — isn't helping. Elle and Tao talk about sex, and sparks fly at a New Year's party.

Charlie and Nick agree to keep their relationship a secret at school while Nick figures things out. Nick's friend Imogen asks him out on a date.

On a trip to the beach, Charlie's desperate to tell Nick how he feels — but Nick also has something he wants to discuss. Tao plans a summer of romance.

Stuck in a secret relationship, shy Charlie starts to crush on Nick, the school's popular rugby star, and joins the team against his friends' advice.

Elle's art going viral on social media lands her an interview. Charlie tells Nick he's ready to go to the next level and Tara suffers a panic attack.