It's human nature.. people take things for granted or rather they just kinda FORGET. Especially during relationships, every relationship has it's 'honeymoon'..I'm sure alot have heard about it.. in the beginning, it burns with passion, it jingles with laughter, everyone enjoys the honeymoon.. But usually it lasts for only a while depending on well.. most of the time the guys, no offence

so most girls want the relationship to forever remain like a honeymoon.. but for guys, it is really impossible, maybe he finds it tiring, or useless.. it's all because we think differently

so as time past by.. less and less of sweet talks, gifts, the care, the concern.. and then the accusation comes:
"you are taking me for granted."
yah, you can't deny that the fact that you took her for granted. cos you did, you neglected her.. and even though you can tell her you still love her as much as before, she wun believe you, because words aren't true enough.. actions speak more than a thousand i love you..

so.. learn to not do that, if you knoe you are not goin to be constant in giving her stuff.. dun give it to her in a routine.. and occasional surprise will be better, in case u run out of ideas

learn to cherish, don neglect her.. treat her like how you would have treat her like the first time you met her.. similarly for girls too, don expect the guys to do everything, do something for him too
