I have a crush on my girlfriend's mom. I like her more than my girlfriend.
Why are you more into her mom?
She's much more sexually attractive than her daughter.
We can't control who we're attracted to, but that's her mom! If you think you might act on this attraction, you should break up with your girlfriend and find somebody else.
I don't think she'll mind.
I disagree, I think your girlfriend would be very upset if she found out that you were more attracted to her mom than you are to her. It would be best if you kept those feelings to yourself, because letting them out would not be good for anyone.