Paris Hilton and Benji Madden smitten

Paris Hilton and Benji Madden spent a romantic weekend together in St. Louis.

The hotel heiress and Good Charlotte rocker travelled together to the Missouri town where Paris promoted her new perfume.

They later partied at local nightclub Home on Saturday night.

The pair – who met through Paris’ best friend Nicole Richie, who is engaged to Benji’s brother Joel Madden – were first spotted together at Los Angeles club Villa on Thursday night.

An onlooker said: “Paris only had eyes for Benji. As soon as she saw him she walked over and gave him a huge slobbering kiss.

“Then they snuggled down in a corner booth. She stroked his arm and his leg while whispering sweet nothings in his ear.”

Paris has recently been romantically linked to Jared Leto.

Benji split from Sophie Monk, his Australian fiancée of 18 months, earlier this month.