If it wasn't obvious enough, you should definitely read the first story, My Player Number Two and then the sequel A Wedding to Remember this is the third story, and I highly advise you to read the first two first. (My Player Number Two is the first story.)
Sweetie Belle and Button Mash have been married for four years now. They're now preparing to become parents for their first foal. But with Sweetie Belle's new emotions, and Button Mash's paranoia, can the two do it? Fortunately, they have help from their friends and family. Filled with emotional heartbreak, and happiness, read along as these two prepare for an experience that they will never forget. WARNING: May contain sexual content, and blood, though highly unlikely. Read for yourself. I'll leave it on Teen anyway.