Chloe Bartoli played a key role in Kourtney Kardashian’s decision to toss Scott Disick to the curb once and for all–but she isn’t the main reason for their split.

The Keeping Up With the Kardashians star endured years of drunkenness and purported cheating before she threw in the towel on the relationship with the father of her three children. Scott Disick’s recent dalliances with Chloe Bartoli spoke volumes–but were likely just the icing on the cake.

E! News confirmed the split on Monday, following a weekend replete with photos of Chloe Bartoli and Scott Disick showing their affection for one another.

“Kourtney has always taken Scott back and been by his side, but now with three kids it has gotten old,” a source tells E!. “Kourtney has to do what’s best for the kids.”

Will Kourtney Kardashian stick to her guns this time? She has seen Scott Disick through countless rehab sessions, watched him make a drunken fool of himself on way too many occasions to count, and has ultimately assumed responsibility for their three children–Reign, Penelope, and Mason Disick–alone. She has tried to ignore cheating rumors and has forgiven Scott Disick way more times than he deserves. If Chloe Bartoli is the icing on this proverbial cake–hopefully she’s one that will forever leave a very bitter taste in Kourtney Kardashian’s mouth.

Scott Disick and Chloe Bartoli were photographed countless times over the weekend in Monaco. They fed each other pasta, lounged on a poolside cabana together, and he draped his arm around her at dinner.

Yes, Chloe Bartoli was icing indeed.

Don’t forget, however, the Kris Jenner factor in the Kourtney Kardashian and Scott Disick split. Scott is a regular on Keeping Up With the Kardashians and he boosts the show’s ratings.

How will this split factor in to the family’s reality show–and Kris Jenner’s bottom line?