And what of the ones they hurt? Encouraging toying with someone is vile at best!
How about these damn fools do what people have done for centuries and court longer until they are sure they are willing to commit to marriage.
'Some may question your right to destroy ten billion people. Those who understand realise that you have no right to let them live!'
-In Exterminatus Extremis
For me, abilities to commit had to come with age and wisdom. I was a immature sailor with poor thinking in my first two marriages. Those marriages were a result of pregnancies and the women were young like me. 1st marriage I was cheated on, so I in turn cheated as well. The second was a marriage that should have never happened. I was not in love at all and although I never cheated, I sure as hell wanted to.
These days I'm with the right one and for the right reasons. That, plus the aging process, plus the understanding of what marriage is to God has given me the ability to commit myself to a lifetime solely for my bride.
If you want total security, go to prison. There you're fed, clothed, given medical care and so on. The only thing lacking... is freedom.