Lesbian Dilema

I came out to some of my friends but no family last year. I know that I am a lesbian but I can't accept myself. I see two girls together and I catch myself thinking its wrong.  How can I still have these feelings about who I truly am?  Do they ever go away? I never thought that I would still be having these feelings after I came out to my friends.  I see two girls holding hands in public and I feel its wrong. I know its not wrong but it is my first feeling.  Is that from years of my family telling me it was wrong? I'm not that young.  As a mater of fact I came out in my late 30's.  Its so hard to make this change and see the disappointment in others eyes.  Help!