How can my husband write an invitation letter and send a circle of friends when he is 36 years old?

At the age of 36, my husband wrote an invitation letter and sent a circle of friends:

1, Dear Ms./Mr. XX, I will hold a birthday party on June 14, and I hope my free friends will attend it on time. I refuse to bring my own drinks and all the gifts. I undertake all drinks, cakes and free lunches. I just want to bring a sincere heart to bless me. Thank you!

Dear XX, I sincerely hope that you can attend my 36th birthday party this Saturday. We will have a pleasant and unforgettable evening. We can talk about wine, recall our past and interesting things, and sincerely invite you again.

Dear friends, I will be 36 years old on August 9, 20xx, and I will hold a birthday party that day. I sincerely invite you to attend! Looking forward to your arrival!

4.XXX: This Sunday is my birthday. I'm going to have a party at my home. As my best friend, I hope you can attend. I think you should be free that day. There will be cakes, biscuits, sweets, cakes and so on. By the way, the party starts at seven o'clock, but I hope you can come early to help me prepare for the party. I look forward to your reply.

5.XX: XX is my 36th birthday anniversary. I want to have a special drink at the XX Hotel on XX Road at noon on X, X and X, and I want to invite you to treat me!