New school HELP ME

Emma

So i went to a homeschool for most of elementary then i switched to public for half of sixth grade and went to public school for seventh grade and now i just started going to the homeschool again i only really knew my ex BFF that I’m still chill with and hang out with alot (our family’s are REALLY close) shes a sophomore btw and her brother is my age we’ve been friends/ kinda flirty aka i like him he likes me and we’ve had a-lot of deep convos and know pretty much everything about each-other. Anyways I basically just hung out with him and his friends the first two days of school and today he said he didn’t really want me to hangout with them 24/7 and I completely understand but my abandonment issues and trust issues filled self thought about “am i not fun to be around?” “Does he hate me?” “am I annoying?” And even though i know that stuff isn’t true i still think of it so i leave his room and start crying and now idk what to do because all of the girls in my class are immature and not friendly i want to go back to my old friends😣😣 please give me advice