Just a little sad

I'm sitting at a wedding all alone feeling a bit sad & depressed. I've realized that i will most likely never ever get married or have children.

I'm 42 & never managed to have a relationship that is either successful or one I could bring a child into the world in and my time has now passed me by. I have a new bf of approx 4 months who had been married before & has a child & who gives every indication he would never get married again. No, i haven't asked him but he does comment about marriage.

It's just making me sad when others are so happy.