Because you're a wuss
I do too. :(
Sounds like you love them very much.
you probably are attatched.. or something... its normal... I think... well at least I do it sometimes with my friend who moved to Japan... so ya... u prob just have a bond...
I've missed alot of people over the years, some I thought is never get over. But you have a heart and care so it's not surprising you have these feelings... They will pass eventually
You have a heart, what dya know!