Finding that attractiveness in another person outside your marriage might be an excuse, a delusion and a very big mistake. Love is different for everyone, but a very general definition is overwhelming feelings that you have for another. If you are afraid to hurt them by speaking out, then eventually your unhappiness for having to sit on it will result in relationship damage. If you trust that your partner will recover from it in a good way, then by all means talk about it now. If you get caught in an extra marital affair, it doesn't necessarily mean that the marriage is over unless you want it to be.
Hope always springs eternal.
I am a PhD psychologist. That will have to be it for this great chat on relationships. We would like to thank the audience for such great questions today. On behalf of the WebMD chat team, it was a pleasure hosting for you this afternoon. We hope you enjoy the rest of your day.