I don't see how that could be wrong unless you're leaving out some details.
I think that's a perfectly natural reaction to being lonely, but clingy people can be annoying to some. If it bothers them then they should say something. If you want to avoid that, then don't make any obvious displays of needing them; if that makes sense.
No. Everyone wants attention more from some people than others.
so **** it, but no its not wrong it means you wanna keep in touch