My best friend died of cancer 9 months ago, she was only 39. Her husband has met a new partner and seems very happy. He and I are good friends and I feel I should invite them for dinner or to go out. I am genuinely happy that he is finding happiness again. But it just feels too soon for me to see him with someone else. I miss her so much I just can't bring myself to meet his new partner yet. Am I being unreasonable, I feel like a horrible person?