You can count on all kinds of surprises at this Sunday's Academy of Country Music Awards. After all, it's in Las Vegas and is hosted by Reba and Blake Shelton.   But now, for the first time ever, there will be a wedding!  Yup, a bonfide "I do!"  

Martina McBride and Train frontman Pat Monahan will perform her new single, a song of Train's, "Marry Me."  Martina's website says she herself chose Christina Davidson and Frank Tucci after hearing their story.  Read all about it here.  They first met at a support group Davidson started for young widows and widowers following the death of her husband, Paul, in a tragic drowning accident in 2009.  Tucci lost his wife, Danielle, to thyroid cancer that same year and began attending the support group. Their shared struggle and friendship created a bond that led to love for the New Jersey pair.  Their wedding will mark a new chapter in their lives, an intimate moment which they will graciously share onstage.   You can follow their journey here.    The 47th Annual ACM Awards air April 1 at 8 p.m. on Channel 7, WHIO-TV.