I split from my XH in April10. I met my new DP last July so have been with him a year now. My XPs niece is 18 next week, and obviously I'll send her a birthday card. My dilemma is whether to include my DP and his DD on it. My niece has been lovely and understanding about me ending my marriage to her uncle, but hasn't met my DP, and isn't likely to as we live in different parts of the country. WWYD?