What is it called?

Its about 3 aliens that are also humans and are trying to find from where they are and in the process they have feelings for other people

!(This post does not belong in the teens category - it should be in the television category in the arts and leisure section)! - anyway - maybe you're looking for Third Rock from the Sun?. (although I think there were 4 aliens in that one.. )

This show is called Roswell, I have all three seasons on CD and have watched the whole series more than once ;)

Good Luck,
Javi

PS: Some links to make your search easier:

http://en.wikipedia.org/wiki/Roswell_%28TV_series%29

http://www.imdb.com/title/tt0201391/