Title: Where Forever Begins
Characters/Pairing: Cole Turner/Phoebe Halliwell
Word Count: 31,264
Summary: With the help of Cole and another unlikely source The Charmed Ones have to stop an irresistible warlock from becoming more powerful than the Source. But things go from bad to worse when Cole gets blasted with the warlock's power instead. Now it’s a race against time to save Cole.
A/N: written for the het_bigbang
A/N2: Artwork by SkySamuelle
Read on AO3