it seems that her intimate concert at The Roxy earlier this week wasn't only attended by her closest 150 My Space friends as was widely reported ... there was at least one other fan in the house -- and, apparently, Courtney was none too pleased about it:

Poor Paris Hilton was left shattered and in tears when her former pal Courtney Love flashed the finger at her during a gig earlier this week. No word on why Miss Love made the gesture in the first place. Paris was seen leaving the rocker's gig at the Roxy on Sunset Boulevard in West Hollywood after the incident. An onlooker tells The Sun: "Paris was just dancing at the side of the stage to Celebrity Skin when Courtney stuck up a finger to her. No one really knows what the reason was. Paris burst into tears and left the gig early. I thought they were friends." While this little item is hugely entertaining, I find it very hard to believe that Paris was "left shattered and in tears" just because Courtney Love flipped her off. Paris is a hardened jailbird, ya'll ... I'm sure it takes more than a middle finger to reduce her to tears ... unless Paris thought that C. Love was gonna do another full body cavity search of her with that finger or something ... then I could see how she might want to cry