Valentines gift for my children

At first it may be a bitter experience to my family. I’ll have to call my children to a meeting and break the news i have been keeping a secret. I have a girlfriend.......and I intend proposing marriage to her this valentine’s day. I know sweat will break from foreheads. They probably will think it’s a joke. Some might get irritated but these are words I’ve been rehearsing for so long and I can’t keep the secret anymore.
I expect one or all of them to take the news to their mother, my wife. I am darn sure what her reaction will be. They'll break the news to her and to their surprise she sighs in relief. Does it mean she doesn’t love dad anymore? The children will ask each other. My wife will tell them 'I knew all along your dad was having an affair'. Bewildered look on the children’s faces. Then they ask 'do you know he'll propose to her very soon?' Her response will be ' I have been expecting that to happen'. Your dad is a Muslim and he is entitled to more than a wife. Your dad loves you, i love you and you can do with an extra love again. The children turn to their mom angrily ' what makes you think the home-breaker will love us?
Enough of the drama. My wife and I will be renewing our vows this valentine and it will come with some practical jokes on the kids. They are growing fast, not only are they keeping secrets from us but also ganging up to play pranks on us. Thus we also want to show them we can also play their game, but in a beautiful way.