Suraj has alwaysbeen the most unexpressive and introvert guy in the show..
Respect is the driving force in his relationship with Chakor from his side..
He never considered himself worthy of her,that is why it has always been his biggest insecurity that she would leave him...coz he considered himself inferior to her...
At first,he would have never moved on in his relationship with Chakor after realising his feelings,if there wouldn't have been any green signal from her side...
Suraj knows it very well,that he does'nt fits the bill of Chakor's 'it guy' from any angle,still she loves him,thats makes him proud of himself...
On the other hand,Ajay from all aspects seemed to be tailor-made made for fitting into the parameters of Chakor's perfect man...thats is why he is bound to be more than effected with Ajay presence around Chakor,moreover the extra goody behaviour and care of Ajay towards Chakor gives wind to the fire...
On the confession day also,Suraj's words clearly echoed his insecurity..."Pehle hame kisi cheez se darr nahi lagta tha,par ab hame darr lagta hai,ki tum kabhi hame chhod kar chali jaogi,aur iske peeche hamaara swaarth nahi...kyunki tumhe toh hamse behtar koi bhi mil sakta hai,jo tumhaare kaabil ho,par agar tum chali gayi,toh hum apni doosri Chakor kahaan se layenge"..
Yes maybe he overreacts,but it occurs only when the love is unmeasurable...
And if Suraj has a problem with Ajay-Chakor bonding,then it doesn't means that he distrusts Chakor,HIS PROBLEM IS AJAY...
At heart,he knows that Ajay is better than him in every manner,but never accepts it..that is why he feels him to be his competitor...
WHATEVER HE DOES IN REGARD TO THIS MATTER IS TOTALLY JUSTIFIED