Cheated - Straight?

I cheated on my husband of 9 years. I don't offer it as an excuse but he has cheated twice with other women. I cheated this time with another woman also. I'm not sure how it really happened, it was all in one day, an old college instructor came to work at my firm and we took a Saturday and spent the day. It was shopping, lunch, later drinks, dinner, more drinks and with my husband out of town she came back to my place for a movie fest. She was saying that she usually undresses and just sits in a robe to relax at a movie, and I brought out two robes. We both undressed, she had the most incredible body, and she's 53years old! She had brown hair on her pubes, trimmed but still long, I am totally waxed.

After a kissing scene between two women in the movie, she leaned against me putting her head on my shoulder, I put my arm around her shoulders. She opened up my robe and I did nothing, just kept my eyes on the screen while she started lightly grazing my boobs and my nipples with her fingernails. I got erect, she started sucking on my nipples, I couldn't help it, I've never been so turned on by a guy with my boobs ever.

I was nail raking her nipples, and her small breasts while she was sucking mine. I pulled her up and we kissed. During the kiss she spread my legs and was rubbing my pussy. I stood up and said we need to go to the bedroom. It was there in the bed where I sleep and have sex with my husband that I made love with another woman. It was the best sex I've ever had. I don't feel bi or lesbian, I just feel like a woman who has found great sex. I can't help but keep it going, and once at work, she took me and licked his cum from the morning from me. So she's not asking that I stop with him, I want to keep going with her. I still feel like a straight woman though.