What's the best premise to get someone to their surprise birthday party? I don't want them to suspect....
We got my dad to his surprise party by making him keep his parents away because he thought it was a surprise party for them... Maybe throw the party for someone else too?
Where is it? And don't know your friend to well but hang out with them while everyone gets set up and then you ask them to go with you there or say he gotta go back you forgot something
Is the party at a your house or somewhere else? If it is your house just invite them for dinner. If it is somewhere else that is harder and I would need more info to help.