This was a cute story about regret and romance. To be honest, I thought the whole arc about the temp trying to get with Kang Joon was pointless and didn't really lead to anything. I guess it was to establish that Yoon Seul easily gets jealous and immature but that was pretty much already established even before they got together. I dont know. Maybe I'm nit-picking.
Either way, this was a cute read that I would recommend to anyone who enjoys those "Seme-regrets-actions" stories.
The Third Ending