Every now and then my abusive ex boyfriend tries these things to make sure I notice him or get this sense of power idk.. I broke up with him in 2018 I was tired of the abuse... Two days ago he tried adding me on Snapchat.. the month before that he had his new gf follow me on Instagram.. then before that he got the same car as me and came to my neighborhood waiting for me to leave my house to show me... with the social media incidents he would later unfollow me or something.. like for Snapchat he only followed me for a day.. so I turned my settings to receive messages only from friends no one else and he later unfollowed... for the Instagram thing his girlfriend followed me for a couple days and later unfollowed but I always had a feeling she was watching my stuff as well...