Meeting my primary school classmate

Tonight after work, I will be meeting my primary school gal friend. In the past, we were sister. Really miss those days. studies and play hard together. It also been a few year we have meet up.

Most of the time our contact are through sms or phone calls. Nowadays is watsapp. I am wondering what would be the next communication channel we would be using? But nothing beat the face to face meet up :)