You've join the red hair pirates all thanks to one of the crew who begged Shanks to let you join to the crew as Shanks gives in and lets you join his crew. You had ate a fruit called the sleep-sleep fruit. Ever since you've finally join the famous crew, you've notice of how Shanks has been staring at you, but looks away whenever you caught him looking at you. But one of the crew which is Yasopp and Beckmanis aware of any of this.