intense?
transformative?
touching the very core of the being?
verging on the taboo?
bringing out the raw side?
does it deal with power in any way (okay, the first thing that comes in mind is control and jealousy. but pluto can play in much more subtle ways with power - such as being actually empowering)? 

if you check all of the above, congratulations, you have a pluto kind of love