Looks like someone's been enjoying this nice L.A. weather!

Robert Pattinson and a mystery blonde lady friend were living it up in the City of Angels as the two were seen leaving The Little Door, a trendy eatery and hotspot that also doubles as a romantic restaurant, in the heart of the city, late last night. Interesting!

The Twilight star and his companion were pretty easy going as they left but no indicators telling who could she be, whether a friend, confidant or other.

Rumor has it that Rob and Kristen Stewart are still seeing each other in an "open relationship" capacity, so that could explain the new guest although it's been said that he's not the womanizing type.

She must be somebody to R-Patz given his nature but it looks like it might be awhile before her identity is revealed...

We got time!