Chris Brown and Nicole Scherzinger were spotted partying it up together at a Los Angeles nightclub last night, and several sites are publishing extremely grainy photos of the pair along with reports that the two of them were whispering sweet nothings into each other’s ears … and KISSING.

In fact, a “source” inside the club told X17online.com — who snapped the questionable pics — the following:

“They were dancing close for a while and being all touchy-feely and finally Chris leaned into her. She put her head on his shoulder and they started kissing! I couldn’t believe Chris was being so obvious about it!”

Too bad none of that happened.

According to TMZ, Nicole’s rep says she and Chris Brown were NOT kissing.

“There is absolutely no truth to the ridiculous story … The photos that have surfaced are old friends who were trying to talk at a very loud club. I guarantee there will be no photos of them kissing.”

In other words … “It’s not what it looks like!”

Chris is currently in an unstable relationship with his model girlfriend of the past couple of years Karrueche Tran, while Nicole is back with her boyfriend, Formula 1 race car driver Lewis Hamilton, after the two broke up and called off their engagement last year.

So, despite their dysfunctional relationships … Chris and Nicole are purely and simply just friends.