And naturally, many are curious about the twosome’s interaction.
After posing for pics in their best black-tie attire, the pair hit up the afterparty, where they engaged in subtle PDA and enjoyed each other's company, much like your average couple.
"Tiger and Lindsey looked content and happy and very comfortable together," a partygoer tells E! News of the pair, who formally announced their relationship status via Facebook in March.
A second party source also tells E! News Tiger and Lindsey were adorably "canoodling in the corner" at star-studded afterparty, where they were clearly enjoying each other's company.
"The two of them were standing at the side of the room dancing together," the insider details. "She was facing towards him the whole time giving him her full attention. They were in the same area as Kate Bosworth, Nicole Richie and Olivia Wilde but they weren't giving them any attention."
Aw, sounds like they only had eyes for each other! And the insider admits it was a "romantic" night for the budding couple, who "were looking out of the windows across the whole city" together.
Despite some published reports claiming the golfer drank too much and embarrassed his gal, an eyewitness tells E! News, "Tiger didn't look drunk...he was more shell-shocked to be in that environment and didn't really know what else to do other than order drinks."
"They were in their own world, just together, they seemed really happy and were bopping along to the music and just enjoying the atmosphere," the source says.
—Reporting by Michelle Falls and Melanie Bromley