I don't think that your no longer important, in fact i think it's because your important, or so it seems to your freinds and the fact that they are beleiving your stalking them that they avoid you. I have also told my parents once that i was suicidle one time, and they did act different around me for sometime after that, but they did eventually start to ... if you will "act the same way they did before i said i was suicidle". I can't lie saying your "suicidal" is a big thing, though you may have said it because you were just really stressed at that time and your fine now, i don't think they relize it, which is why, Well atleast what i think, i could be wrong, but my conclusion would be that they don't have the same understanding of why you said it, as you do.
Now I know that when i type sometimes, my idea can come out sort of wrong, so to sum it up, they are probably just worried.
However "time" has never failed to this date.
_________________
It's not that I'm so smart, it's just that I stay with problems longer.
Albert Einstein