My sincere sympathies to you, marton66, and the others are right, don't fret over things that cannot be mended now, easy to say, but, it will only hurt you. Move on as soon as you can. I've lost three brothers and three sisters, and whilst we all loved each other, we certainly didn't always show it. SO much jealousy. More's the pity, we should each have been bigger than our precious feelings urged us to be.
Someone once said to me 'don't let hurt, hurt you', how I wish I'd listened. Now, is only here once.
However, I have one brother left, so I'm doing my best, to be a better sister.
Wish me luck gransnetters. But I really am a bit hopeless.