Theme for a movie 'I am serious'

Now another bit of taboo concept. I do not even have the story but a theme for romantic comedy. which can take twist but in weird ways.

Its story of Aalia (gal) and Salah(guy)

Aalia have one friend Ratul(guy)

Salah also have very close friend Haima(gal)

Its not about about Ratul fall in love with Aalia or Haima falls in love with Salah on the contrary Ratul falls in love with Salah and Haima falls in love with Aalia. and both of them have no Ideas about them being homosexual so they are not able to understand their own feeling leave apart Aalia and Salah as they cant even imagine it. So inability to express and yet feeling excited or the feeling of love and uncomfortable encounters between four will be story line of this.

I wish some one come up with the story lines for this.