I do have a few new in town date location ideas. since the game takes place in England, there should be at least one Fish and Chips shop in town. As well, there coupd be at least one butcher/deli somewhere in town. you could also add a local brewery/winery for a location either in or out of town.
Also, how about the leisure center has a workout supplement shop like a GNC, that sells mass gainer powder that you can buy to add to the Funnel feed option for faster weight gain. or to buy stuff for weight loss/muscle gain.
Another idea for an out of town date location, how about a Waterpark? you can do a lot with this location, and having your date start getting too big for certain rides until they can only go in the wave pool and lazy river would be a neat mechanic, maybe the water park could serve extra fattening food there as well. Maybe have a secluded cul-de-sac section of the lazy river, where you can have an intimate encounter with your date in the water.
I would recommend adding this extra content in the update after the next to shorten the development time of the current update you are working on. I imagine you are working on a bunch of stuff for the current update already.