Love is to lust as a train is to getting run over by a train.

 Woman Who Sent 65,000 Texts To First Date Says ‘Love Is An Excessive Thing’
https://www.huffingtonpost.com/entry/woman-65000-texts-first-date_us_5af60227e4b00d7e4c1a95b8?ncid=engmodushpmg00000003

Love is to lust as a train is to getting run over by a train.  

The road of excess leads to all sorts of places.