for me love is something that cannot be forced and along with it a lot of other things such as trust is also important
generally in today's movies, love is portrayed as something out of pity (from the heroine's side) or something that suddenly happens because of incident like the hero fighting against some rowdies(usually for a girl)
and from the hero's side it is always love at first sight or no love at all- i've seen so many movies where the hero either is always staring at the heroine with his mouth open or just plainly ignoring her
other than those kinda movies there are some good movies that show the emotion of love well and that make you fall in love with the hero...
specific movies include - alaipaayuthae and minnale - i so luv maddy in those movies
also, VTV (changed my opinion on simbu a bit)
most romantic heros - surya in vaaranam aayiram and ghajini, simbu in vtv, maddy in alaipaayuthae and minnale
romantic jodis- simbu-trisha, arya-pooja, surya- jothika, surya- asin