Trying hard to be happy....for them...

Linn
I have been TTC for 2 years. We have been together for 3 years and still no ring. His best friend meet his wife in January married by April and now pregnant. It is so frustrating watching them get everything that I have wanted for years now. I'm trying not to be bitter about it but it is so hard. I just want my marriage and my family. I was hoping that when his party friend got married he would finally pop the question. But nope still waiting. I'm I wrong for feeling this way? Am I being selfish? I don't want to be happy for them, instead I'm mad.