I have this idea to play the son in law..you of course would be the mother in law.
She comes to stay maybe because you are on the verge of breaking up or already had and she feels she can help save the relationship.
The characters had always had a flirty type of relationship but very lightly.The son in law had always thought about how he would have liked to have met her whilst she was younger but always harboured thoughts of a older woman.
The storyline would run on how and if the relationship develops with maybe periods they are apart but will they in the end be submit to feelings they fight or whilst one tries to bed the other.
The age and looks of the female character are for you to choosen or a pic would be good.
Please pm is interested.