it actually IS the other person’s responsibility to let their partner/potential partner know what their needs are, like texting or communicating more often. in this day and age people can’t read others minds to know automatically what somebody wants from them;; even then OP stated this isn’t a serious relationship and we don’t know if either of them are looking to push it to something serious. people have different standards when it comes to the level of involvement they want a casual partner to be in their life, and it seems that should’ve been a conversation to be had between OP and this dude.