pooja..u dont have to worry dear..U will have a Tamilian by ur side most of the times to get u out of sticky situations like language-barrier and north-Indian-dislike. But for rest of the times, when u are on ur own..I would suggest that U learn up Tamil from Sreeni..
but even apart from these things...it is frustrating to live in this city man...its bloody hot and u dont get SW monsoons here...public transport is pathetic..road traffic is uncontrolled and rowdy...drainage is nonexistent...just 1 shopping mall for all practical purposes...customer services everywhere is slow, indifferent and discourteous..hardly any theatre shows hindi movies....and the restaurants apart from the ones serving south Indian food are pathetic...
am not discouraging you..when u r in luv u tend to ignore many things..Hope u have a good time here..:)