Do you girls think it was the right thing to do, telling her the truth like that?

My gf is a college sophomore and we've been together a few months ok? She's 5'5, like around 160, thick. I've always been the player type, and was when we met. When I first saw her, I actually tried the same act on her. She had on black leggings and I just tried to play it off on her, by ignoring looking down at her booty/legs, so she wouldn't notice-and so my jaw wouldn't drop. It didn't work on her though. I can't! My eyes dropped right to those 2 places and my whole mouth fell HARD, ugh! Thing is, so did my ego...my act. I hated it. I even tried to recover by looking up to play it off, but when I looked up at her face, she had resting bit** face...and I just couldn't break through it. Well last week I finally admitted to her how I was when we met, what I tried on her that first day, what the result was and what got me so easily...also how I felt at that moment. Since then though, she's worn different black leggings like 4 out of 7 days and keeps that resting b face around me a lot. It's frustrating! It's like she's making me pay for having been that way, ugggh! Should I have even told her that at all? Did I do the right thing?