I highly doubt the individual you're talking about hasn't forgotten you, but truth be told here, if you keep on with begging for their attention (especially if they're a MOD/Admin who burdens a lot of responsibilities), they'll get annoyed with you and only then you really won't be their friend. I, by no means, say this just to be harmful though it's the bitter truth. Like Suragaha and Feareh has stated before me, it'd be best you realize that they are most likely busy being swarmed by whispers/chats, having to keep a constant watch for any rule-breakers in publicity, having to answer private messages on the forums and handle any reports they might get, organizing the forum, I can keep going with this. The best thing to do is remain patient and they'll respond to you sooner or later. Friends don't bluntly forget each other unless it's for a good cause. Being promoted to a MOD/Admin is not one of those causes. You're not being that good of a friend for bluntly deciding that they hate you now, ignore you, want nothing to do with you. That right there is putting much stress on them, I'm sure. The best thing to do right now, like stated before, is to be patient and wait on them to become not so busy, perhaps slip in a small chit-chat or two now and again. You can also help them by showing them reports, keeping an eye on the members by their side, etc. Little things like that is enough to restore what's been lost. I wish you luck.