Story time! I have a friend who I met while living in Barcelona in 2015 and we spent four weeks being almost inseparable. She left over a month before I did to go back to her hometown in New York, but I didn’t think of getting her number because I had her on Snapchat and Instagram, which were our main forms of communication together in Barcelona anyways. However, in early 2016, she went MIA. She went from posting on her Snapchat story almost every day to not at all, and honestly, it took me until late September to notice. Her Instagram was still up even though she wasn’t posting, and I…