One of two things happened — either he’s not that interested in you, so he didn’t get you a birthday gift or a Valentine’s gift (or card), or he’s stingy. Since you’ve only been dating a month, tread cautiously. He’s not as into you, at this moment, as you are to him — or else he is, and he’s never going to be very generous.
I hope this helps. Let me know how things go, and please follow me @AskAprilcom on Twitter and on Facebook at this link: [url][/url].