Girls, girlfriend kink shamed me an it developed into cheating?

I love my girlfriend a lot that’s why I haven’t split up with her, a long time ago we tried a kink fantasy of mine involving me being a receiver etc, she made me feel shitty an weird for being into it, she spoke to her friend about it since they are super close, then her friend messaged me saying she’d been there an done it all, basically comforted me an it’s developed into a semi casual situationship where she’s sleeping with me but now I know it’s a really shitty thing to do so how should I go about trying to end this an stay with my girlfriend

Girls, girlfriend kink shamed me an it developed into cheating?
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