Hi! 

It's first time I play and I've bought full version.

Please, How many billions we need to have access to the mysterious item after condom and the icon on the left with 2 guys in love please?

It's about the first guy but I think it's the same for others, it's right after the masturbate scene.

Thanks for your help! :)

Hi Yukito28!  Sorry for the late reply.
 The douche should unlock after you get Kabir's sex scene and then you can do the duos.

So just get all of the first four guys' solo scenes :)