My husband is a twin and I always feel second best to his wife.
They have four kids, she has a very successful career, is very pretty, very practical and sensible. Their kids do lots of sports and activities and are all very sporty and talented and always performing and winning awards etc
We have two kids and I have a part time job and I can barely keep up with everything. My kids are great but very average, they only do a couple of extra curricular activities and never win anything.
It's clear my in-laws favour her by the little comments or actions they make. They are not rude to me but much warmer and kinder to her. She is fine with me, polite but she is quite competitive and I always get the impression she looks down on me.
Family events leave me feeling very sad and worthless.
I am so grateful for my lovely husband and great kids and I know I am increadibly lucky.