Is this normal to have girlfriend and a crush on someone else?

Anonymous
I'm happy with my girlfriend for 2 years and I'm not going to break up with her or cheat her, because I know nobody will be so good for me like her.

But lately I have crush on other girl with who I work , I love to look at her, fantasize about her every night, I feel like in heaven when she talks to me flirt, or smiles to me. But I know it's nothing serious anyway.

Is this normal? Does this happen to other people who are in relationship?
Is this normal to have girlfriend and a crush on someone else?
9 Opinion