Girls clink their cheeks together, or join hands. Boys rub shoulders with each other or jokingly jump on each other. Lovers huddle together, kissing and hugging.... It is difficult to draw two people when you are trying to draw them!
This book explains how to draw characters in "sticking together" poses, starting with simplifying the body to grasp the shape of the body, and then moving on to close poses. This will expand the range of scenes you can draw. Why don't you try drawing a variety of exciting scenes ranging from friendship to romance?