Mckenna Gilinksy and Jack Gilinsky are inseparable they have each other's back and are never apart. You would think they were dating or married with how much time they spend together and how much they know about each other. They've even had relationships and yet they are always together. One down fall of them always being together is almost all of Jack's friends have a huge crush on her. One day they were on tour and some of the guys asked Mckenna out. A lot has changed between the guys and Mckenna. A few things you might want know about Mckenna she was diagnosed with severe depression and social anxiety. Also she is 18 Jack is 20.