friend

i have this one friend that get jealous when I'm close to my another friend. she also said she want to hit them lol. i thought she would be happy if i got another person to talk to bc I'm not really sociable irl. but she doesn't say that to me, she said to my other friend. she said that she miss me but not to me. she also said that she was scared to text me bc she thought i will be bothered by her. and when I'm talking with her she act casual lol. she never talk about her feelings with me. and she only act like this with me. idk what i did to her that she get jealous when i talk to another person bc i didnt talk to her that much. some days we talk some days we didn't talk at all. also she always talk to another person thats why i dont really talk to her. i also didnt do anything special to her other than gave her a teddy bear but that was 2 years ago. i dont really know what I'm asking rn but what are yalls thought about her :/ sorry my english is not good