You are a genius, go read a book. Anyway, and then there are one of the most infamous triangles in the world: Love triangles.  Yeah, that cliched routine plot which has been overused in Bollywood Films since times immemorial. One girl, two guys fighting it out. 
Boley toh "Bhabhi hogi teri aur Shaadi hogi meri" sorta things. Ek Phool Do Maali , you see.

Also, two girls, one guy and tug of war to win his heart is totally Cool in Bollywood too.Like,"Jeeja hongey tere aur pherey honge mere". You get the drift.

But it's all cute and mushy when it's on the screen and in the scripts. The moment it dawns in real life, you start wishing that getting stuck in Bermuda triangle would have been a better option.

But believe it or not, there have been plenty of love triangles in the real lives of Bollywood stars who either fell for people outside their marriage or cheated on their partners. What compelled them to do so, we would never know. How much truth do these rumours hold, no one can vouch for. But reportedly these people have had the steamiest of romances which involve more than two people. 
(Apparently, not many people are good at Maths.So you can chill, you're not alone in this.)

Here's a list of those people who have been allegedly involved in real life love triangles and grabbed public's attention: