(Cover) - EN Showbiz - Penn Badgley and Zo Kravitz have reportedly split.

The two Hollywood stars were first linked last summer, although they have kept their romance under the radar.

It is known that they spent the festive period holidaying in Miami together, but it seems their relationship has now cooled.

Penn spent the weekend partying in New York City with a group of friends - and Zo was not present.

"The Gossip Girl actor was seen dancing at Southside in SoHo on Saturday night without Kravitz but with friends including some very pretty girls,'" New York Post reports a source explained.

Penn was seen having a fine time with pals, and partied until 3.30am. He eventually left the nightspot with a mystery brunette lady, but it is unknown if they went home together.

Neither the actor nor Zo's representatives have been reachable for comment yet.

Rumours the pair were dating first began swirling last July, when they were spotted looking cosy at a Hollywood party. They were then spotted out and about together several times.

Penn is renowned for keeping tight-lipped about his love life. He dated his Gossip Girl co-star Blake Lively for three years but declined to comment on their time together in public. (C) Cover Media