My girlfriend made me lie about my age when meeting her parents and I went along with it.

I’m 42, dating a 25 year old and we’ve been together for around a year now. I’m of East Asian descent so I get mistaken for being younger than my real age all the time. Especially right after I shave and all my grey beard hairs are not showing. Anyways, my girlfriend, who is white, planned for me to meet her parents last weekend. They live an hour away. On the drive she asked me if I could “do something kinda weird” for her. She then revealed to me that she had told her parents I was 32 because she was afraid they wouldn’t accept the age gap. I’m only 5 years younger than her dad. I immediately felt a mixture of humiliation, shame, anger and uncertainty, but I agreed to it. During the entire time we were there, I felt numb and distant, but it seemed like they believed our lie and liked me. I’m surprised I didn’t spill the beans somehow with a reference to something that gave it away. Over this last week I’ve been wanting to bring up this conversation with her, but I’m also hesitant because it feels like it will inevitably lead to the conclusion that we will not last since she can’t even tell her parents the truth about me. At the same time I feel like I’m losing my dignity if I stay in a relationship based on a lie to hide something about me. I don’t know if she’s even serious about us since she apologized to me afterwards, but it seemed more lighthearted as if it wasn’t that big of a deal. At the same time, she constantly talks about having “cute half Asian” babies with me as if she’s serious about us long term. She’s also mentioned that she always forgets my real age since I look younger, so it’s like she’s not really fully cognizant about our material reality and living a semi-fantasy life with me. I dunno…