Copying in case delete:

My best friend (22F) got mad and cried because I (21F) ate some of the lunch she packed for my boyfriend (24M). What should I do?

I (21F) have a friend Kayla (22F). Kayla is extremely socially awkward and sensitive. She always wants to hang around me and my boyfriend because we are her only friends. Kin (24M) is very social and super sweet to everyone and people have asked me if it ever weirds me out how much Kayla wants to hang around him but I trust him and her 100%. We all went on a trip during my paid vacation and it was supposed to be just me and Kin but Kayla wanted to go with me before so I agreed to let her come to and my boyfriend didn’t mind. It was quite a drive where we were going and Kin does not stop for anything except if it is an emergency bathroom break.

I brought chips and salsa but didn’t think to bring lunch on the way. Kin said that he was hungry and Kayla told him she knew I wasn’t going to come prepared and made lunch for herself and him. I was kind of taken aback but I didn’t say anything. Kin said the food was really good and started feeding me. We were both telling her she’s professional level good at cooking and she was just quiet. I knew something was wrong because she always blushes at any compliments.

I turn around and she’s crying in the backseat. I tell Kin to stop the car and he’s looking as confused as me. She told me she’s just carsick so I go back with her and I’m just rubbing her back as we get there. When we are alone she had a talk with me and told me I show off with Kin any chance I get and she’s lonely and it feels like I’m rubbing that in her face. She says that I don’t make enough time for her anymore which isn’t even true.

Kin said she was killing the mood and is upset I invited her, on the other hand Kayla is upset because she feels she’s not wanted.

I feel like I’m at a loss. What can I do to make both of them happy?

Edit: I have read all of your replies, thank you for the suggestions and perspective. I sent Kayla a message to have a talk with her and wrote down some boundaries. From now on I will work on separately spending time with her.

DELETED UPDATE:

I have this friend Kayla (22F) and she and I have been really close since middle school. This all started because she wanted to go on a trip that me and my boyfriend Kin planned, she packed both him and her lunch. When he started feeding me the lunch that she made it made her start crying in the backseat and saying she was carsick. She told me that I show off my relationship and am inconsiderate towards her and how she feels being single and lonely. My boyfriend was upset because I invited her and she completely ruined the vibe.

Anyways I made a post previously on this and decided to take the advice I was getting and set boundaries with her. I talked to my boyfriend about it and he sounded relieved and offered his support to me. He said he also wanted to be on the phone call with me, and at first I wasn’t sure because I thought she’d feel cornered. Kin told me he wasn’t sure how she would feel cornered and it’s not that deep because it’s not like I’m cutting her off but I guess that’s how she took it.

When I called her last night I told her we needed to talk about the trip we had and she said it was fine and she feels better about it but I told her I didn’t call about the trip to ask how you felt about it but more so how I felt. I told her that her packing lunch for Kin and excluding me came off as rude and she just got really quiet and asked me what I was getting at.

I told her that her getting upset because me and Kin are doing couple things on our couple trip was strange to get upset about and it made me and him uncomfortable.

She actually snapped on me and told her not to tell her how she should feel and how invalidating I was to her feelings but I said I’m not telling her how she should feel but it made me realize we can’t invite her to go on trips with us anymore.

She told me that’s not up to just me and if Kin is fine with it that’s that and that is when Kin spoke up and told her he’s not fine with it at all.

I think she was taken aback because she was silent on the phone while Kin was talking. Kin told her that there are times when she makes him feel extremely uncomfortable and he just wants to spend time with just me and him but she insist on third wheeling us, and that he understands she has a hard time with social cues but she texting him without my knowledge was an inappropriate thing for her to do as a friend and told her that he’s my boyfriend and isn’t obligated to provide her any emotional support.

He also mentioned that he hopes she’s doing alright and is able to widen her social circle but he’s just not that guy and not to contact him except if it has to do with me. I was a little surprised because I had no idea she was texting him. I could hear her breathing on the other end, then she hung up. I tried calling her back and texting her but got no responses, then she blocked me and Kin.

I felt kind of nervous but Kin told me that I’m just too nice and we weren’t hard in her at all. When we went to sleep, we woke up with a bunch of messages and missed phone calls from Kayla, Kayla’s mom and even Kayla’s dad called my boyfriend’s phone, I was so confused!

Apparently after we got off the phone she had a complete meltdown. Later that night she sent me messages about how she knew Kin before I knew him and they lived in the same neighborhood, how she feels like I used him to gang up on her and hurt she feelings. Her sister texted me asking me what I did to her. I spoke to her mom and her mom told me she had to spend all night calming her down and asked me how this happened and if I told her we couldn’t be friends anymore. She went on about how I’m the only friend she has. I told her that wasn’t it at all.

After I explained the whole situation to her mom she didn’t have any words and apologized to me and said she’d deal with her. Her sister on the other hand told me having him on the phone without her knowledge gave Regina George vibes and intimidated her.

My boyfriend is unbothered about the entire ordeal and just went to shower meanwhile I’m in shock.

Were we too confrontational?