Am I being selfish?

[Yourmentalhealthmatters2017]

My two female cousins always have better luck than me in the romantic stakes

Ones engaged to her first love and live together and the other lives with girlfriend.

I should be happy for them but I'll admit I'm jealous, however ones now single and moving back home.
But I'll will be helping her .

Maybe I'm bored of the 'look' and being told 'your turn next'

But does that make me a horrible person?
Does anyone else understand how I feel?

I don't see what's making you selfish. Being jealous isn't the same as being selfish.

No, of course you're not being selfish. You're sad and possibly jealous that they have their Happy Ever After and you don't (yet). But you have no way of predicting the future - give it 5 years and things may have flipped, or ideally you'll all be happy and settled.

Thanks for the reassurance.
It felt wrong to feel like that, but now I see it's ok