Can i be Man Enough for Her?

Hey girlies :) Wolftail here-
Im sixteen and have been a lesbian for four years now. Two years ago i met this girl- she blew my mind. She was two years older and had a boyfriend so i supressed my feelings in order to maintain the friendship. This summer we got really close and were chatting. I asked her if she had ever kissed a girl. She responded that she had. And had slept with a girl. And had feelings for me. Six months later and we are still going strong after she left her abuse boyfriend. The problem is, shes really straight. I know she loves me, loves sex with me, loves being with me but im so worried that im not man enough. How do i show her that im better than any man? That i can be everything she needs without a penis? Any help is appriciated. Thank you so much for reading :)