The SMS Scheduler App for the Android can send out an automatic happy birthday SMS. This can also be done with the SMS Scheduler from Blackberry. Another application that can complete this is Chomp SMS.
"Thank you, it was so kind of you to remember me"
Thank you that is so sweet
Thank you , wish you too have the best for your upcoming life.
When someone wishes you a Happy Birthday, you should reply with "Thanks a lot".
When someone gives you a birthday wish, it is fine to give a simple thank you as a reply.
It either means she's preoccupied, not interested or your just annoying her
You can design your personally online birthday card and send to him via sms, via email or share it to him, Let your boyfriend know that 'You are Special' The website is in the related link.
Like with every other 'best wishes' phrase, say thank you.
You can simply say Thank you to the other person. You could also say Bless You to them.
The only thing I can think of is just saying thank you and I'm glad you remembered
look at it see what he says reply back something dirty that has to do about what you guys are talking about