A human one! Don't be too hard on yourself. I know you're happy for them too, even if sad for yourself. They can go together and it doesn't make you a horrible person!

I have similar - I am unable to have children and although it was wonderful to see my friends start their own families, it hurt like hell too and am still very jealous of them. There is no answer really, other than trying to look on the good side, keeping myself busy with other things, and trying to stay positive. I can't change my broken body, but you can change your situation. Try and get out more, go to groups, night classes and make friends. Find other single people, and while its fair enough online dating isn't for you, but are there any events near you that do speed dating or something that's fun and may help?

Don't give up.. and although I may sound like a boring old cliche auntie, 26 is young and plenty of time yet. I met my partner in my mid 30's.

Hugs.