Wife is like a tv
Girlfriend is like a mobile 
At home u watch tv 
but when u go out u take ur mobile 
No money, u keep ur old tv 
Got money, u change ur mobile 
Sometimes u enjoy tv 
but most of the time u play with ur mobile 
Tv is free for life 
but for the mobile, if u don't pay, services will be terminated 
Tv is big and bulky
Mobile is cute, slim, curvy and very portable 
Operational costs for tv is minimal 
but for the mobile it is often high and demanding 
Most importantly, mobile is a two-way communication ( u talk and listen ) 
but with the tv you must only listen ( whether you want to or not !!!) 
remember.....last but not least!

TVs don't have viruses 
but mobiles often do .