It was over before it began! Ariana Grande and Pete Davidson's fast romance -- and more importantly, their engagement -- is OVER!

The couple got engaged in June after dating for only a couple of weeks and now, after four months of being engaged, the pair have realized it all happened too fast. A source tells Us Weekly: "They realized it happened too quick and too early. The wedding is off, but they’re working things out. They’re not officially done yet."

Thing seemed to take a turn when Ariana's ex Mac Miller died of an overdose on Sept. 7. Grande pulled out of several performance commitments immediately thereafter -- including a gig on Saturday Night Live where Pete pulls a paycheck. Last month, Ariana's rep announced the singer was taking some time off: "Given the events of the past couple of years, Ariana is going to take some much needed time to heal and mend. She will be staying close to home and using this period to spend time with her loved ones and work on new music without deadline. She thanks her fans for their understanding."

Wonder if Ariana's giving back the $100K diamond engagement ring she got from Pete (or did she pay for it to begin with?)! And that new multi-million dollar penthouse is gonna get lonely! Poor Ariana!!!