Question

I myself am lesbian, my girlfriend on the other hand is into what she likes, goes off vibes. She is wanting to bring a man into the relationship. Due to her being very religious and she feels she needs to give men a chance. I on the other hand am not interested. Not sure if it matters but im 25 and she is 29. Just wondering what people think if they were in my position. I want something but i feel she is wanting something else. But regardless she always puts me first and loves me. I am thinking am i feeling not interested because i am not confident? Not sure but i just cant wrap my head around this but want to be open. Does anyone has similar stories?