Does everyone have a capacity to fall in love?

I think 99% of people have the capacity to truly-madly-deeply fall in love. Prereqs for finding true love--as per my experience: my theory is that before you can understand what true love is, the kind of love that 70 year anniversaries stem from, first you have to have your heart completely broken by someone. My reasoning is that once you have had your heart broken, you discover a part of yourself than you can only meet after that kind of devastation, and learning to love yourself again after having your heart broken helps you grow as a person, and makes you more respectful and compassionate towards the people you date in the future. I don't think physical health has much to do with love--when you fall in love with someone it isn't based on the physical (although you would have had to be physically attracted to them before you started dating). Mental health, that depends on what kind of mental health you are referring to.

what love ? it's all lust .

I hope that answers your question