The two songs have always sounded similar to me and they both have a similar theme of heartbreak and betrayal. I actually thought the latter was written by Diane Warren too so I was surprised to find that it was penned by Toni and Babyface.
Both songs were released as their respective albums 6th and final single. The One I Gave My Heart To charted at #9 on the Hot 100 becoming the albums highest charting single, whilst Toni's song failed to garner radio support due to the fact that Un-Break My Heart and her other singles from the album were still in rotation.
I don't even know why I'm making this into a poll. I'm just bored at work and both songs slay me tbh.