Here’s the synopsis for the 90210 episode 2×17 – Sweaty Palms and Weak Knees. Do not read below if you don’t want spoilers!
ADRIANNA AND GIA TAKE THEIR RELATIONSHIP PUBLIC — Annie (Shenae Grimes) deals with the outcome of Jasper’s (Zach Sherman) decision to jump from the Hollywood sign and begins to find some peace with her situation. Silver (Jessica Stroup) and Teddy (Trevor Donovan) decide to double date with Liam (Matt Lanter) and Naomi (AnnaLynne McCord), which makes Dixon (Tristan Wilds) and Ivy (Gillian Zinser) feel left out, so the two decide to fake date. Adrianna (Jessica Lowndes) and her band perform for the first time at the Beach Club and, with her newfound confidence, Adrianna decides to make her relationship with Gia (Rumer Willis) official in a very public way. Liam encourages Naomi to come forward with her sexual harassment case, which causes her to continue her lie. Rob Estes, Lori Loughlin, Michael Steger and Ryan Eggold also star. Krishna Rao directed the episode written by Ben Dougan (#217).
Source: The CW