Alex and Brooke are one of the main relationships in the series Greenhouse Academy. Their full names are Alex Woods and Brooke Osmond. Brooke is the daughter of Louis Osmond, who is the headmaster at the Greenhouse. Alex is the son of famous astronaut Ryan Woods, and FBI agent, Carter Woods, he is also the brother of Hayley Woods.
Originally, Brooke is dating Daniel. But during Season 1 Brooke and Daniel experience troubles in their relationship which inevitably lead them to break up. Before the break up, in episode 11 (Great Scott) Daniel and Brooke attend the dance together, but because of Daniel's injury (which is where the taser barb was) he doesn't want to dance with Brooke. Brooke gets bored, and is tired of waiting and hoping that Daniel will dance, so she goes over to dance with Alex. This infuriates Daniel, but he feels helpless because of his injury.
In the beginning of Season 2, Marcus and Judy feel that Brooke knows too much about their plans, therefore, Marcus hypnotises Brooke into forgetting what she knows about their plans. Judy sees it as a good opportunity to heal her son's heartbreak, and Brooke is also hypnotised into wanting to date Daniel again, although she has feelings for Alex.
Later in the season, Hayley and Daniel team up to try and discover what schemes Marcus and Judy are planning. They discover that Brooke is hypnotised because Marcus gave Brooke a code-word mantra which tells Judy that she is still under their control. It was the phrase "meant to be", and she constantly used it whenever she was talking about Daniel and her. Hayley asks Jackie and Max to build a device that could de-hypnotise Brooke. After the process, it is shown that Brooke does indeed have feelings for Alex.
Brooke and Alex are only officially a couple after Brooke introduces herself to Alex's parents as his girlfriend, in Season 2, Episode 12 (Home).