Forgetting a birthday

Kayla • | HI native • CA living | Don`t expect people to understand your grind when God didn`t give them your vision| ✌️n❤️
So my hubby forgot my birthday... mind you he's deployed. But we still talk everyday. I understand he's busy and pretty much works from sun up to sun down but still, it's my one special day out of the year. Should I be upset or kinda just brush it off? And please no rude comments. We are very happy and very much in love. The military life isn't for everyone 😔 >.<