Lea Michele was singing her boyfriend's praises at the Coachella Music Festival.
The Glee actress, 25, arrived solo at the Lacoste L!VE desert pool party in Thermal, Calif. Saturday, a partygoer tells Us Weekly. She chatted with fashion designer Lauren Conrad, 26, "for at least half an hour" before hanging out with Diane Kruger, 35, and Joshua Jackson, 33, in their cabana.
Her boyfriend and costar Cory Monteith, 29, arrived shortly after. "I just saw a really hot 6-foot-3 Canadian with a tribal arm band hanging by the pool," Michele tweeted. "So happy."
When Monteith found Michele in Kruger's cabana, "he tapped her on the shoulder and she was so excited to see him," the partygoer says. "She threw her arms around him and they hugged and kissed on the lips."
Once they retreated to their own cabana, the Glee costars continued their flirt-a-thon. "Their arms were constantly around each other and they were talking very close," the partygoer tells Us. "They definitely looked like a couple with how affectionate they were being in public."
Later that night, the couple watched Bon Iver and Radiohead perform. "What an amazing night," Michele tweeted.
Monteith added: "Today was one of the coolest days of my life."
The lovebirds recently returned from a romantic getaway in Cabo San Lucas, Mexico -- just one month after taking their relationship public. According to an insider, Monteith brings out the best in Michele, who ended her long-distance relationship with Broadway star Theo Stockman in September 2011.
"Cory is definitely having a positive effect on Lea. She's much less miserable these days," the insider told Us. "Even when she was with Theo, she was always depressed being so far away from him and not getting to see him. She likes having someone with her that's actually there."
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