Alex finds Sabrina taking less interest in the food combo rally they have agreed upon. Instead, she was lost in her thoughts, giving him short replies with only small nods, yes and umm's.
He was assuming the reason for her distraction was none other than David. Although he had tried to make sure that he don't get in his way by exposing a little truth to his fiancée.
He wasn't dumb to not realize after seeing both David and Sabrina together with a longing look in both of their eyes that they had obvious feelings for each other and for some reason they weren't together. No wonder David bought the portrait of Sabrina's that he had painted with a huge amount at that.
He wanted David's fiancée to doubt him so she would block all the paths that would lead her to Sabrina and thus make it less difficult for Alex to reach her than it already was.