"I Told Ya I Love Ya, Now Get Out!" was composed
by Johnny Frigo, Lou Carter and Herb Ellis. (Some sites credit only Ellis with its writing.) The earliest performance I can find is in the late
1940s by the instrumental/vocal trio
the Soft Winds (whose members are the composers), but it's a
jazz/
big band standard and has been recorded by many people in many genres. I first heard
Cybill Shepherd sing it on
Moonlighting, myself.
Sources:
http://www.dcwi.com/fiddlers/fiddler2.htm
http://nmr359.uoregon.edu/~blues/digests/pre-Nov97/95/Aug95/BL0814
http://musicnet.chandra.ac.th/eng/j_bio.htm