Jennifer Lopez beams while Casper Smart looks downtrodden after split (photos)

47 year old Jennifer Lopez and 29 year old estranged boyfriend Casper Smart split after Casper went on a boys' night out at a UFC fight instead of joining her at a charity weekend.

And now it seems rather obvious who is winning the break-up between Jennifer Lopez and Casper Smart.

The two stars were seen on separate outings in New York City on Thursday as one definitely appeared to be in better spirits than the other.

Jennifer, 47, was seen grinning from ear-to-ear while her 29-year-old former boyfriend looked 
downtrodden during his outing in Soho.

According to TMZ, Jlo & Casper are talking again and on friendly terms ... the only difference is J Lo broke up with him and he's in denial.:

Casper flew to NYC to be with Lopez, who's there for 4 months shooting her TV show, "Shades of Blue." Sources close to both of them tell TMZ, their relationship is "amicable" and they are still great friends with a lot of affection and history ... but J Lo has made it clear ... they are no longer a couple.

As for Casper, we're told he is not accepting the breakup and is in strong denial. As we reported, the last straw in the relationship was Saturday night, when Casper blew off a big fundraising event in the Hamptons -- an event where J Lo wanted Casper to accompany her -- to attend UFC 202.

Casper thinks it's just another fight, but J Lo is resolute -- the relationship is over.