Summary:

How did he let this happen?

Shane's not sure.

One moment, he was on the gym floor not staring at Rozanov's gorgeous sweaty body. Then Shane was standing up, but his legs were weak for some god forsaken reason and Rozanov was there, just an arm around his waist to keep him upright, and now...

Well.

Now Shane's on his knees on the floor of Ilya Rozanov's shower.

 

Or

Heated Rivalry, but the boys are forced to have an honest conversation around 8 years earlier than they do in canon.