Learn to Open Up. (Shadouge) (COMPLETE)

Five weeks ago, E123-Omega went on a routine mission. The mission, to destroy an old abandoned Eggman base. But, he hasn't returned yet. Commander Towers has called Agent Shadow and Agent Rouge in to find their missing partner, and bring him back safely. Shadow, however, hasn't been acting normal lately, and Rouge is worried for his health. And now cant seem to keep her feelings for the dark hedgehog secret much longer. Will Shadow finally catch on to all the subtle hints his teammate has been sending his way? Will the duo find Omega? You'll have to read to find out.

So I know this opening is written really cliche, and the title really isn't the best. And I have changed it to be rated mature. There will be some lemons, although I'm going to build into and probably only do the one, since that really isn't the point of the story. And I'm probably going to make it to where if you don't to read that, I'll put it all into a chapter that will have no big impact on the story, so it can be easily skipped. So i wanted to take a crack at making a Shadouge story myself. I feel as though I can be a good writer, I just have some things I need to touch up on. I'm going to try to make this better than my ShadAmy story (which I still like, I just rushed the relationship to much, and really screwed up the ending I feel).
Anyways, the point of rambling, is that I want constructive criticism for this story. I want to make sure it is the best I can do for the community that likes this ship. So any advice on future chapters, along with just general improvements to the story that you all think I could make. (By the way, take a shot every time you read the phrase 'open up' in this first chapter.)
None of the art is mine, along with the characters involved. I do not own any of the Sega branded characters.