I agree with the two above post. There's communication issues and finding a mediator, marriage counselor, psychotherapist, trusted friend, or someone who can help you two progressively speak constructively to each other about what is happening between you two is the right way to go. Even finding your own therapist or professional would be helpful because it is sometimes difficult to work on a relationship when you yourself feel destabilized.
This isn't falling out of love. Love is an action you two take for the two of you as parts of this relationship. Feelings of desire, want, intimacy, lust and the such are related, but not love, as unpopular that is to say.
Psychoanalytical Psychotherapist: Online and In Office Psychotherapy Sessions.