What can I do to prove to my wife she is the only one for me,that there is no other women for me but her?

My wife checked my cell phone and found a tex from a relative and misunderstood it(the tex said the title of a song"good night my love"),she got really jelous(first time) and now is acting different.I want to prove to her that there is no need to be jelous.What can I do? I want to do something special and different,done flowers,candle light dinner,candy,cards, romantic getaways,even done home made cards etc...I want something different to really show that I love just her and nobody else but her.