I liked this episode… as Sheldon's logical brain goes into full overdrive worrying that Leonard will mess up his new relationship with Stephanie, and the solutions he comes up with are pure Sheldon – completely over-the-top and hilarious.
It's fun watching him take normal relationship fears and turn them into these wild, calculated schemes only he could think of. At the same time, this episode really builds up the Stephanie-Leonard arc nicely and makes you root for them more. The balance between Sheldon's meddling and the growing romance feels right.
7.5/10: Not the loudest episode, but smart, funny, and it strengthens what's turning into a solid storyline this season.