Even if you share your location, your friends rightly won't be monitoring your every move. A simple text giving them a heads up of where you are or where you're heading is always smart. Also, let them know who you're with! First names, last names, and even an Instagram account is helpful — that way your friends know exactly who you're hanging out with. If you don't know your partner's name or the part of town/campus you're at, re-evaluate the situation. Never feel weird about pausing to ask for more details and always make sure you feel 100 percent comfortable with the situation. And just as you checked in on your way over, shoot your friends a message letting them know when you leave or if you won't be coming home for the night.