Good after Chloe Annelise's.
I just want to say that you are not alone and that your situation is literally similar to mine. It's really tough to comprehend at times why these issues happen in relationships. Usually in unhealthy relationships, one partner may be more enmeshed and loving the other and this causes the relationship to become unbalanced. Know that you are a forgiving and a compassionate person. You have demonstrated that you can resolve issues within your relationship, however, you Ex isn't. He has chosen to give in and for whatever the reason is (i.e. depression, study or family issues), the love balance in your relationship is not equal. Now, this doesn't mean he doesn't love you, however, it does mean that he doesn't love himself enough to understand that he needs to love and support you.
If it helps you with your situation, I asked for space from my partner because he was not always reliable - I was the one who loved and support him and when I tried to resolve our issues, he would ask to break up, over and over again. It simply comes down to who they are as a person and the their problem is giving up too easy. I am now accepting this and even though it has been very difficult, I am taking my life back to focus on my mental and physical health and learning to love myself the best I can.
You are caring, loving, strong, compassionate about yourself and you're compassionate about others. Please look after yourself, give yourself space from this person who has closed the door and focus on making you the best person you can be. This is time for you to reflect, acknowledge and make any improvements on your lifestyle to feel nothing but joy and happiness.
Please stay in touch, we are all in this together.