Too often people think love is just how they feel on any given morning, loving someone isn't about that, loving someone means working through the inevitable bad days, and that's an act of will, that requires practised skills

you can't expect to remain competent if you don't practise the skills,

depression is entrenched because the mind has created negative habitual patterns of thinking to which the brain is addicted on a chemical level - when doubt creeps into the mind of a depressive, and this is usually about themselves, they are more likely to feed that doubt and enter a vicious circle which erodes the positive feelings we associate with love

In my experience its important to act towards the one you love as if you love them, whether you feel love/eros or not - if you loved them once you can love/eros them again