Stephens abnormal feelings.

After Dina left, Leo said," I hope that you'll never forget that Dina is our little sister."

" Of course." Stephen said before walking towards his room.

Leo also told Dina that she shouldn't stick around Stephen much and used to maintain at least a forearm distance with him. 

Without objecting, Dina promised Leo to do as he said.

From that day onwards, Dina started staying away from Stephen. 

The cold and aloof side of Dina agitated Stephens abnormal feelings and he started becoming impulsive.

He started sleeping around with different kinds women fantasizing about Dina. 

Not being able to control his feelings, Stephen started making small advances. He never missed a chance in which he could touch her. 

At first he started with touching her hands, then her shoulders and finally her waist.

Dina found it weird too but she shrugged her feelings off thinking that Stephen was also her big brother just like her brother Leo.