"When It's Love" is a power ballad by Van Halen, from their 1988 album OU812. The song has been a live performance staple since it was released.
https://en.wikipedia.org/wiki/When_It's_Love
https://en.wikipedia.org/wiki/OU812_(album)
https://en.wikipedia.org/wiki/Van_Halen
Text to this post, obtained from this song's Wikipedia page, has been slightly modified and made available here under the Creative Commons Attribution-ShareAlike 3.0 Unported License. (CC BY-SA 3.0)
https://creativecommons.org/licenses/by-sa/3.0/