Conventional mantras evoke the sacred noises of this universe to harmonize and balance our energy and the body.
Affirmations connect more using the mind that is logical real manifestation of everything we want. As a result they don’t integrate smoothly or quickly to the subconscious head. This is the reason for it to work if you don’t understand how to do an affirmation properly, it can take years.
So as to make a language that is english or other non sacred language) based mantra effective. enter into the experience from it. It cannot work by simply saying it with no feeling because it does not make use of the ancient syllables.
Concentrate on the experience you shall experience when you’re with your partner.