1.
Shake hands with one another.
2.
Enjoy some leisure time, really get to know one another.
3.
Talk about nonsense for hours and hours on end every single night until you don't feel like it anymore.
4.
While you're at it, feel free to discuss your passions and goals as well!
8.
Experiment, try some new things.
11.
Complain about your allergies together.
12.
Model for one another.
13.
Introduce him to all your friends and family and strangers.
14.
Get all of your clothes monogrammed with each other's names.
15.
Draw portraits of one another.
16.
Grow a beard together!
19.
Sit in an ice pud, actually, no. No one wants to do this with Harry.