Ranting

I just need to rant. I'm super excited with my pregnancy and I've always been close with my grandpa. But he's not coming to my gender reveal because a "cow sale is more important" and he's not coming to the birth because "I can't miss cattle sorting" (my grandparents are huge farmers) would you be upset? It literally broke me and I just feel like I don't need to include him anymore. he takes my cousin all the way to Oklahoma and Texas for competitions, but yet he can't drive 5 minutes to my house for a gender reveal. And last night we went to dinner to talk and he yet again payed for my cousins meal but I had to get my own check. (Her and I are a year apart) she's a fucking adult just like me. I'm so hurt and didn't think things would be like this. He's been my best friend since I was a child and I feel like I'm losing him. What should I do??