Am i really hated or not?

You know I have some few clmates who have gone in house and I don't know what did I do to them but suddenly when we got in our school after them staying at our house they seem like became hypocrites and started avoiding me.. Really I don't know why.. And here comes a time when a clmate of mine group messaged us clmates and I saw " Aiko don't be angry too much! " I was astounded because Aiko got my number and I didn't get her group message. I was totally hurt and it seems I'm the one who they are referring.. I don't want to be hated... Please give me advice.