How to Show Love in a Non-Conventional Way?

Take a love language test with him. Affection and expression of said affection are important things to communicate at pretty much any stage of your realtionship. It is helpful to show love in a way your partner enjoys and can understand best even if is not how you typically show love, it sounds like for him it's words of affirmation. It's also important for both parties to understand what your love language differences are and work out a way that each of you are comfortable and fulfilled with expressing your feelings and the way the other person does so as well. It may also give him a new perspective on why you can't or haven't yet shown your love in the ways he understands and how to better understand the signs later.