That's a tough one op and I feel for you.
Sometimes it's a painful journey to detaching yourself from the need for them to acknowledge your feelings.
Other times you realise that you don't need them to validate how you feel.
Sometimes its forgiveness. Or speaking to someone else who does acknowledge how you feel.
You might come to the conclusion that these are ppl you don't need in your life, or need to be so close to and move on. Build new relationships.
I'd ask you why it hurts so much and what does that tell you about you? Not a criticism, but what is your unmet need that is being flagged by this? There may be other ways to meet it.
Ultimately, you can't control others, you can only control your own reactions.
If you'd like to share with us then please do. Otherwise, be gentle with yourself and realise you don't need them, you are strong enough to look after yourself without their consideration 