What would be the reason they would ever do that to me?

Lately I have been having drama with my two friends or now distant friends.I dont even know how it started,really.But I was diagnosed with depression about two years ago…and im still in therapy.But you see,I thought since they were my “friends” I could open up and request some advicefor my issues I have struggled to deal with.But its all past stuff too,I fell in love with this guy…yada yada…my bestfriend,Sam felt “pushed away” when that wasnt even the case.So she dwelled off to another friend and I didnt mind it because the other girl was my friend too.So,after I suffered with heartbreak with an idiot who was actually in love with Sam.I was forced to break up with him and ever since then,im ok-im over him.But it grew tension with Sam and I because I loathed her over a stupid boy-it was stupid because I was overuled with my heart and didnt use my head with the situation.But I tried to make things right even though I had that grudge inside me.But she and my other friend are already a pair and they always called me to brag about wherever they were.They called me here and there-but usually nobody called for me,but they and I became distant.So anyways,one day I was trying to open up to them and talk about my conspiracies-but they gave each other this look of annoyance,weirded-out-ness,and like I was an idiot and they needed to tell me something.Afterwards,the other friend Angelica cae up to me and began telling me that I dwell on the negative,and I try to make tham feel bad,and I ruin their day etc,etc,etc… And ever since theyve been avoiding me.Honestly,it beats the s**t out of me on the inside cause I grew so attached.But the way theyre treating me just makes life hard to bear with…And over the days I’ve tried everything to make things right.All I have been doing is apologizing…So then one day…I called Sam and tried to fix things…I let her take it out on me by her shouting and harsh worded weapons.It ended with me being cutoff by being hung up on.To the honest truth,I kept all my anger and complaints on the inside. She told I’ve changed,she doesnt know how long I’ve been this way etc,etc… Well no freakin duh…I’ve learned,grown up and went through so many life changing events in less than a year,of course,I even know I changed.But it shot me breathless when she said “I dont think its healthy for me to be around you anymore.” WTF? And on Valentines Day,I tried to forget about the stupid phonecall and gave them theyre presents.Within a few minutes later,they returned them back saying “ I cant accept this,sorry-we feel bad.” All I did was try to be understanding and kept telling them it was ok.But at every turn,I am being shot down and rejected from anything life has to give me.Its gotten me scared of people–please,someone help me with this.