[Daring Scylla]

Unfortunately i'm usually the one on the receiving end of the "i just forgot"
I think it's a fine line - you can't be really pushy and hang all over the person you think 'doesn't care any more' (i rarely get like that about it) but you feel like they forget you, and when they do, it makes you think that you aren't important to them. Patently wrong, especially that last bit but it's easy to see how people arrive at that conclusion. I try to be open mind about it - maybe a family member died, maybe someone was hurt, maybe a car broke down, maybe this and that - i tend to be over generous with that. Usually when I find out it's nothing, that's when I get really boiled about it and occasionnally I'll end up rowing with the person.
Both people need to strive in the relationship - the one who is 'forgotten' should be more aware that the 'forgetter' has a life away from them. The 'forgetter' should try to remember who've they talked to recently and remind the 'forgotten' that they do exist to said forgetter.
It's an unfortunate situation - i think a lot of people do it. "Just one more thing before I send that email" or "let me do this before I give her a call..." and things turn into minutes into hours into days into months until they're angry at you.
It's not the result of anyone trying to be malicious it's just something that happens. It's not cruelty or selfishness. It's just a thing. A mistake. And it's unfortunate.
hahaaa I guess I haven't been much help but that's my take on the whole bit.