Is flirting as bad as actually cheating or making a move on someone?

Just curious. I am married, but I like to flirt and enjoy being flirted with - but I never would take it further than that. I think I do it more since the "romantic/dating" stage of my relationship has dwindled over the past 11 years. I still love my husband and wouldn't want to really be with anyone else. But I just enjoy the simple inflation of pride or ego I get with flirting. Is that bad???