It’s not up to me to decide whether there is love in the affair. The whole thing is meant to bait the second player’s Beliefs - he is currently attempting to gather money to buy a countryside villa (with attached gardens and fields) since he wants to run away with his secret lover. He’s failing miserably (or being honourable and not accepting bribes, depending on how you view it.) 
This is his chance to get a country villa - but for the price of an unplanned marriage. There is a possibility that they will be able to resolve it to mutual gain. The woman would prefer to stay independent, but might go for it if her potential husband would be supportive for her goals, or simply provided her with a cover for her political activities.
At the moment I’m thinking of going with the wedding supplying 1D of Affiliation: Patricians of Rome. The villa will be available for any use the owners want, both in story and rules categories. If the players get married, I will add it to the husband’s Property list, but leave it on the wife’s Property list as well. Owning the villa will allow each of them to use Estate Management to generate cash dice and linked test for maintenance test. It will also raise the obstacle for the maintenance test. If the maintenance test is failed, its consequences will involve the villa running into disrepair, to mirror the fact that there is not enough money to for its upkeep. Once this happens, the villa won’t be available for Estate Management tests until it is repaired (but will still raise the obstacle for maintenance test). Repairs will require tests of Circles, Resources and/or skills in order to buy new grape stock, hire workers to fix the roof, nurse the animals back to health etc. What do you think?
(I would really up the husband’s Resources by 1 as well, as per BWG p. 374, “Title”. Right now he’s at B2. After all, Resources show how much people are willing to give you on credit, and “married to a patrician and a land owner” should boost the credit rating somewhat. It would also extend his “home turf” from “just Rome” to “Rome plus towns neighbouring the villa”.)
Now I’m also thinking about the maintenance test. Should the husband test for the whole family (with the wife providing helping dice) at +1Ob? (After all, buying in bulk is +1Ob, so providing for people in bulk should be +1Ob as well.) Or should they both test separately? BWG lists “maintaining a family in the city” as Ob 3, while being a wealthy peasant is Ob 4, but I’d generally think it was more expensive to live in the city at that time.