You talk to him. It is your birthday and you should be able to celebrate it. If he can't join you and your friends he shouldn't be grudge you doing so. As long as your friends are good people. You should mention that you are going to miss him being there, and suggest maybe you do something together either the day before or after.
Bf spending time with his son on My Bday. I accepted that. Want to go to a party with friends and now he is mad I don't get it now. What to do?
It sounds like you guys have trouble communicating your needs / wants with each other, in addition to setting boundaries. You can be disappointed that he will be with his son for your birthday; on the other hand, he can be disappointed that you want to do something fun with your friends.
If you guys cannot communicate these little things and learn how to work through them, when you come across something major, you guys are really going to have problems.
Think of how you want to approach the conversation and then what you want out of it. Compromise could be the key. Good luck.
Its your B-day today?
You don't let this man control you that's what you do. He's doing what he wants and has no reason to expect you to sit home on your birthday.
Just wondering why he is spending that particular day with his son, doesn't he see his son regularly? He could easily work around the date of your birthday.
This man sounds immature and controlling you need to run not walk away from him or you'll spend your life having him control what you do.
Happy birthday! Go out and have a wonderful time with your friends and tell your boyfriend he's NOT going to tell you how to spend your time.