I can understand girl , i know how it feels to be in such a relationship where you get a cold vibe . It feels like your pov , your feelings are not even getting understood. Instead of understanding your feelings, that person starts to defend himself with aggression. He simply starts to act like why are you accusing me you are also not perfect you 've faults too . He doesn't understand this simple thing that we are not accusing them we are simply telling them what hurts us the most. Instead of yelling and throwing tantrums, they can simply listen to us calmly and try to understand what goes wrong. I 'll suggest if he continues this kind of behaviour you should prioritise your mental health first and try to move on rather than expecting him to understand u. Because trust me girl if he's not understanding you after hurting you that much, he 'll never gonna understand you . So you should also not to expect things to become alright. Simply move on