He had been a big jerk, I need advice on how to handle it.

So I (15M) got this friend of 3 yrs. For the privacy I'll call him Jake (11M soon 12M). We used to be in the same grade as I started school late while he skipped a yr. But as now I moved to a different country I ended up skipping 2 grades. But lemme get to point. So we became friends as he was friendless and heavily bullied in the class as his dad died when he was very young. So I became friends with Jake as he was also a great kid back then. But recently he changed a lot. To start with it all started. When he started cussing and swearing in the middle of the call. But it escalated into doing sexual things and taking a number 2 while being on audio call with me (after leaving the country we had talked for an hr everyday until this incidents happened). Even btw when my mom met him for the first time before we left our home country she praised how great kid he is. Then a 1.5 yr later I visited my home country. I couldn't met him bc he was at his grandparents house. But I did met my bestie of 5 yrs whom I'll call Maria here (12F soon 13F) that time. But then 1.5 yrs later I again came to my home country. Both me and my mom (43F soon 44F) invited Jake and his mom Becky (32F). We also invited Maria and her mom whom I'll call Sarah (43F) for my 15th birthday in my home country. As my birthday fell when I was in my home country. And it was my first birthday in my home country in yrs. So in total in the day of my birthday there was 55 guests. Both Jake and Maria came with their moms. And due to which I quite couldn't understand how muck of a jerk he became. As after my younger cousin sis whom I'll call Amara (7F soon 8F) arrived in the party. I was busy with her as my birthday was on a buffet and every food was on adult sized counters which was too high for poor girl. So I was helping her around with buffets. At which point it was my birthday yet I was the one invisible and nowhere to be found,But I loved helping her. Especially with how my aunt aka her mom also my mom's sibling (39F soon 40F), Gets a break from her. So I didn't quite notice his behaviour. Beside that he was telling Maria (as all 3 of us and Amara was in the same table). That Maria is giving tomboy vibes. On my birthday Sarah gave my mom a traditional outfit from our culture which is exactly like my mom's style and she gave me a pair of feminine earrings (I'm agab aka assigned gender at birth but was raised as female even tho I later on ended up being more on amab spectrum aka assigned male at birth spectrum but I identify as masc leaning genderfluid. But other then my friends and my mom's side extended family everyone knows me as female). Those earrings were real pearls and it was feminine yet not anything that will yell "cis female" on my face (as masc leaning genderfluid I hate passing as cis female even on my fem days I wanna pass as early transition mtf trans or nb trans fem then cis female). And with that Maria gave me a bouquet of flowers. While Jake gave a big bag of chocolate with a bouquet of flowers. Then just 2 days right after my birthday. Me my parents with both Jake and Maria with their moms alongside with my aunt and Amara went to an modern indoor amusement park with VR and arcade. Tho later on my uncle (44M soon 45M) aka dad of Amara and my aunt's husband joined all of us. Before going to the indoor amusement park. Me,my parents with my aunt, Amara and Jake with his mom Becky. We went to the food court to get some snacks (Maria and her mom Sarah didn't arrive yet as both of them were busy and then later on joined us in on the indoor amusement park). So we ordered foods for all of us. And then we went to what soda we want to get. Becky chose coca cola and ordered it (many other chose coca cola which wasn't the issue). BUT after food arrived with our sodas, Becky told my mom "no I didn't ordered Fanta". My mom was forced to switch with her as my mom got a Fanta. Then even in that snack time he kept cussing and swearing in front of btw a kiddo and family. Then after finishing the snacks. All of us went to the indoor amusement park where while we're in the trampoline he said said something bad again to me as a "joke". But I brushed it off even when I found it weird. Later on Maria with her mom Sarah arrived. Then me and Maria went to a 12+ only rides on the amusement park. And before me and Maria went to the ride Jake told both of us "I wanna see u two bounce". Both me and Maria got annoyed but we went to the 12+ only ride which was one of those circular heavily shaking rides where u gotta hold for ur life. Then Jake, Maria and I went to those spinning VR games. It was a 3 person at a time VR and Maria was on middle. On her left was me and on her right was Jake. Jake yelled his lungs off and bc of which Maria got annoyed which makes a lot of sense. Then afterwards he made muiltply sexual comments to Maria who called him a perv at this point. Then Becky started asking hundreds abt my uncle to my aunt which she found annoyingly werid as she met Becky literally for the first time in her life. Then Maria and I went to one of the shooting games while Jake went to a VR game and my mom was around then accordingly to my mom after jake got off the VR. He appearingly licked his mom's lips with his tongue while Maria and I was on our 2nd shooting game together on 1v1. Meanwhile in the meantime Maria was complaining to me abt Jake and his behaviour and I was too embarrassed to say anything. Then after that all 3 of us Maria, Jake and I. Went to those 1 person VRs where u stay in a laying down typa position. Jake went first and then Maria and I was talking abt how Jake looked there. But Jake got offended by it. Afterwards Jake Maria went in. And Jake tried to tickle Maria's feets. And after she got out, Jake told Maria and I something really bad again. Surely Maria and I went into a 2v1 fight with Jake bc of what he said. My mom was with my aunt and Amara on the kids floor that time alongside with my uncle. Only parents there was Sarah and my dad while Becky was in distance on her phone. After that 2v1 my dad and Sarah told us to stop it as the fight was getting outta control a bit even tho Maria is 5'4 while Jake is 5'5 and I'm 5'2 (I even sometimes beat the hell outta 6'2 guys in my school if they mess too much with me). Then later on Jake went to his mom and cried while watching country balls things.

Afterwards Maria I went at last on that VR. Becky definitely said something to Maria bc after I was done with the VR,It was alr closing time. And as all of us were getting out the bowling section was still open, All of us went for bowling which was peaceful for once even tho Jake was with his country ball vids on the phone. And after all of us got out, Maria told me "why doesn't Ms Becky likes me, I think she hates me" and almost cried as it was the last time we're meeting eachother before I left my home country to return back to the country I live in. Afterwards my dad went to grab some foods for both Jake and Maria alongside with their moms, especially with how Maria doesn't get to eat the snacks in snack time. Later on we told byes to everyone. I'll let y'all u what happened next on forms as update 1,2 etc. As it's a hold different updates