The bottom line is - in relationships you are not responsible for your partner and likewise, they are not responsible for you.
We all are infinite powerful human beings, who have the ability to give ourselves the love we seek. Your relationships are there to enhance what you give yourself already and to add value to your life experience. Not to mend you or carry you. That is 100% your own responsibility.
This is why it is so important to always be aware of what you want from yourself and the relationship you are in.
In my book - 'Law of Attraction Living: The Core', (available on Amazon), I dedicate a whole chapter to relationships (intimate and platonic) and I mention how important it is to enjoy each other and not focus on expectations from each other.
Knowing what you want is not about expecting certain things from your partner, it's about knowing yourself, your weaknesses and your strengths. It's about pulling the good things from the relationship and keeping those parts alive together.
When you become more aware of what you want, this energy shines through and your partner connects to it. After all like attracts like. So if you become aware and stay focused on the good things...this will be manifested back to you.
Be aware of you. Be aware of your role in life and which direction you would love your life to go in. When you do this, you can mend relationships or walk away from them.
But if things don't work out and you decide to go your separate ways...by being more aware of self, you will not feel emotionally drained, because you stood strong in your awareness of self all throughout the relationship and you remained whole.
You become an emotional wreck only when you have lost sight of you, throughout the journey. It's easily done, but not anymore right?
Whether you are in a relationship or not, I always encourage my clients to build the foundation in who they are. You have to stay a 'whole person' throughout any relationship you have, even platonic. If you don't have that foundation down than the relationship is off to a rocky start already.
So my final tip for you today is - be honest and real with yourself. Spend some time away from everyone and everything around you and just be still and connect within. Close your eyes and let your thoughts focus on you and in that silence, you will gain the insight to building your foundation in you and knowing exactly what it is you want from life and love.
Oh, and by the way, this will be a good space to release all pent up negative emotions and anger you are holding onto. This doesn't serve anything and the only person it hurts is you.