Is it wrong ?

Is it wrong I’m jealous of my cousin for having a girl when I’m having a boy ? When we found out we were pregnant I knew what I wanted to name my girl .. and I have no clue on a name for this little baby .. now that we know he is a boy.. but today we found out that my cousin will have a girl and I’m actually really resentful of her ... I’m usually close to her but I feel like her having a girl will make me hate her .... my family didn’t seem excited to know I was having a boy but there over the moon happy for her .. and it’s honestly hurtful and I hate them for that