The "friend" who mentioned the expense of purchasing two presents for two children obviously does not expect a present from each of thes children when HER kid has his/her party!
Kids are born when they are, and parties are/should be arranged for when it is convenient for the family. So...
First, talking with someone does not require your dh's okay. Period. End of story. You are ALLOWED to have whatever conversations yo so choose.
HOWEVER, making birthday party plans IS someething that he shoudl be allowed to weigh in on, and for a 3 year old, he may have a valid point. It is...