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Robert did not hesitate to enter the train. However, when he entered the train and saw Susan. He halted his track and looked at her with wide eyes.

Holy Moly.

"Susan!" He cried as he rushed to hug her. But to his disappointment, she sidestepped his hug, keeping a distance between them before she asked. 

"Long time no see, how are you doing?"

Robert didn't know what to say. He was just staring at her with his mouth ajar. After a couple of seconds, he recovered from his initial shock and gave a bittersweet smile.

"I'm good, what about you?" He asked. 

"Fine." 

With that, Susan averted her gaze and looked outside the ark. Robert wasn't annoyed by her cold attitude. He was already conversant with her behavior. He took a deep breath and waited for the others to come in.