Sydney Sweeney may not have been the only one who wasn't pleased about reuniting with her ex... Last weekend, photos emerged of the Anyone But You star sneaking into her ex-fiancé Jonathan Davino's car in El Lay. According to TMZ, when he dropped her off at her home, things took a heated turn and she screamed at him, "I don't believe you. Please leave, leave me alone." It's not clear what the pair were arguing about, but exes exchanging heated words is not exactly shocking news. We mean, they just called off their engagement in March after being together for seven years! So we're sure there's a ton of emotion and leftover feelings that go into their conversations - which we heard they're FORCED to continue having for the foreseeable future because of their joint production company Fifty-Fifty Films. Yeesh! And to make things even MORE complicated, Sydney has moved on with record executive Scooter Braun... Who we're hearing has a lot of thoughts on her reunion with Jonathan! Related: Are Kelsea Ballerini & Chase Stokes Back Together? See The Evidence! On Friday, a source spoke to The US Sun about how Scoot truly feels about his girl meeting up with her ex... And it doesn't sound good: "Scooter got really mad. He doesn't like that kind of behavior at all, especially knowing the history between her and Jonathan. He knows they had a serious relationship, were together for a long time, and even got engaged. So, seeing her with him again - and getting caught on camera getting into his car - really set him off." Yikes! The source continued: "He's not controlling, but he wants her to know that he truly cares about her and that his feelings are real. He's deeply in love and serious about building a future together. Scooter's a man with strong values and morals - and for him, it's not acceptable for his partner to be seen with other men, especially exes. He thought what she did with Jonathan was disrespectful and not cool, and he didn't want to stay silent about it. He was hurt and wanted her to know. What he wants is full transparency between them - and for her to be the same way, but also to act like someone who's in a committed relationship, not single anymore. He's made it clear that he wants her 100%, that she needs to compromise on some things, and that seeing her ex like that crossed a line." Oof! Sydney and Scooter first sparked romance rumors over the summer when they were spotted hanging out at Jeff Bezos and Lauren Sánchez's wedding. But it wasn't until September that we got some actual proof of their romance. So Scooter may need to remind himself that while he's been dating the Euphoria star for a few months at most, she has a LOT of history with her very recent ex-fiancé that she's surely still working through! As we previously reported, Sydney was hesitant to commit to a relationship with the 44-year-old, who's head over heels for her, because of how fresh her breakup still is. The source noted he acknowledges that given their age difference, he may come across as "old fashioned," but feels he "does a lot" for the 28-year-old and is "present, supportive, and fully committed." Following her reunion with Jonathan, Sydney and Scooter were spotted making out in New York City's Central Park. At the time, insiders told DailyMail.com that the pair are "smitten" and still "very much together." Sources at the time claimed Scooter wasn't too bothered by the reunion, but maybe he was just trying to play things off cool at first? What are your thoughts, Perezcious readers? Do YOU believe this report? Let us know in the comments down below! [Images via Danielle Robay/YouTube & MEGA/WENN] The post How Scooter Braun Reacted To Sydney Sweeney Reuniting With Ex-Fiancé Jonathan Davino appeared first on Perez Hilton.