Who asks you to hi s birthday party, if it is him, then why not you ask him etc to come to restaurant for your birthday. Surely some does the asking so must be him. So you also can do it. If they do not come ! You then know where you are, just bother depend on yourself. But, do not get nasty and bad manners over it, as you then can cut them out of your life, and one day you may need them. They may not just think about it. Like me, I never care about birthdays, as I had a mother in law who was all over you about birthday, but look out the next day she would have her daggers out for you. So I am wary of those who make a big fuss. Prefer to walk under the radar, and do my own thing.