Please someone answer this

What would u call someone who forgets her stalker well not her stalker but someone that likes u a lot and looks up to u and when her birthday came u totally forgot and don't say that could never happens to u because Ur responsible and u care never say never then she calls crying two days after her birthday trying to give u clues about why she's calling until she says thanks a lot for calling to wish me a happy birthday what would u call someone that did that? be uness please send me comments emails or messages please thank you