Dad didn't tell me happy birthday ...

So my dad didn't tell me happy birthday and I feel ..well a way about it still. It really hurt my feelings because growing up I always stood up for him when my mom would talk trash about how much he sucked but he just keeps letting me down 😔 My birthday was in January and i'm 23 now. I ended up letting him know he forgot my birthday like earlier this week and all he said was "happy birthday." like really? 😔 I feel foolish for being an adult whining over someone forgetting my birthday but it just hurts me still...all I really want is for my biological dad to SHOW me that he loves me because his actions haven't been holding up his words... I don't want to be petty and bring it up because he asked if i was mad yesterday but i said no and now i regret it 😞 does anyone else have these problems with their parents and does anyone have any advice ?