Don't know what to do with this guy!!

I (22f),final yr pg pannitu eruken,I started talking to this guy 3 months ago.Summa casual ah teasing and roasting each other type of friendship and nothing more than that.

Apro oru naal romba mood off la erundhan,so I texted him.Apro Avan sonnan,I am an orphan apdinu raised by grandparents and enaku pesa kuda yaarum illa and some other things.Enaku oru madhiri aayiruchu, adhanala konjo comforting ah pesunen avankitta.Then he started opening up about his traumas and suicidal thoughts.Apro enaku enna solradhunu theriyama"I can't relate with what you are going through right now but I can understand how you feel"apdinu.

Then things were smooth for next couple of months,apro dha notice pannen Avan daily enkitta vandhu rant pannuvan,unga life normal ah eruku,enaku mattu ye ipdi nu,enaku amma yepdi erupanga nu theriyadhu,avanga love kuda feel pannadhu illa and appa paatha bayam then he too committed sucide(his dad was abusive).

Edha pathi daily pesa start pannan,I feel so uncomfortable right now.

Then the real problem started during the pongal celebration,i wore a pink saree and my other guy frnd also wore pink shirt.This was totally coincidental.But he made a huge scene about it by teasing me in front of our whole class.That was really embarassing.

Edha pathi avankitta explanation keten,ye epdi panna nu.Guess what he said,enaku yaaru illa,i don't know how to talk to girls and behave in front of others,amma erundha solli kuduthurupanga apdi ipdi nu pesaran.

Enaku konjo time venu nu sonnen,oru 2 days ku text panna vena apdinu,this was during pongal holidays.Apro oru 70 to 100 lines la oru text anuparen,I am sorry but I really didn't mean to do that to you apdinu.

Apro onnu sonnan paarunga,ne enaku amma madhiri apdinu.That was so creepy!!!

I don't know what to do!!! How to avoid him without hurting him?!