I've been with my partner for a couple of years, we're looking at moving in together next year. We get on well with each other's kids.
His eldest has a big birthday coming up and DP hasn't invited me to the party. The child's mum and all her family, along with DP and all of his family (who I know) are going. Their Mum's partner is also going.
Is it odd that he hasn't invited me?