Why did these grls/boys go from loving me to not takling to me?

They are probably terribly busy with college. The beginning is the hardest because you are having to get all the basic courses out of the way like history, foreign languages, english, sciences and maths. They have probably been very busy getting ready for their semester finals lately. Also, when you move off to college it is really hard to keep up with all the new friends as well as all the old ones from high school. It is just too much. I am sure they mean no harm.