Dear our kind ametthyst,
You said that you don’t feel complete when you have a relationship with your friend, do YOU let yourself be content with the relationship you have right now? Sometimes when we are separated with those who are dear to us (maybe in this case is your best friend), we could be unconsciously comparing the happy moments we had in the past with the present moment. Maybe you felt this way? If you are, then try to remind yourself that it is NOT comparable. Every moment is constantly changing and that happiness is created inside. Try to relax and enjoy the very moment you had, because the present is the only time you have. Both past and future is just in our mind..
Have a great present time! 🙂
lots of metta