Just got an invite for my 8y old DS to a birthday party, for this weekend (short notice). He is already invited to somebody elses birthday on the same day and roughly the same time.
I would normally send excuses for the second invite (which arrived later), as weve already made plans, but feeling a bit unsure about it as this is DSs absolute best friend since they started school, and if given choice Im sure that my DS would prefer to go to his best friends birthday rather than the other one, and might feel dissapointed / let down if he cant go.
No doubt the boys will be talking about it in school so DS will know he missed his best mates birthday, eventually.
You might find that bf's mum will end up changing if the group of friends are already going to another party. She won't want an empty party, so let her know that you've already accepted the other invite asap, just in case all the other children she has invited are going as well!