Chapter - 45 His sister

Now:

Francis:

"Meet Francis" my sister introduced me to her, she's looking at me, she advanced her hand, I shook her hand

"Nice to meet you" she said

"She's Freya, Alex's sister" my sister introduced her to me, what? Does Alex have a sister? He never told me about her? He always told me that he's alone of his family, he lives alone but then how? Why did he lie to me?