My girlfriend (21F) is upset after discovering that I (26M) wear height insoles. How should we handle this situation?

My girlfriend and I have been together for six months. During this time, I’ve been wearing height-increasing insoles that boost my height by two inches. With them, I reach 5'5", while she is 5'3". I chose to wear them for a confidence boost when I’m with her. However, now she’s upset after discovering the insoles, feeling as though I've deceived her. How can we move forward from this?