It's INSANE that I started to want to date girls.

I know it's super weird. I came out as gay publicly, including to my parents, when I was 13 and everyone in my life knows that I'm 10000% gay that girls even felt free to sleep in the same room with me. I'm very proud and committed to my gay identity, and all my friends and family members were supportive. However, I've messed up with about 5 consecutive dates. I saw one of them as a true love but was still denied after confession. I lost confidence in dating man. I don't know why, maybe I'm just going crazy, but recently I started to think about dating girls... I feel bad and guilty for this, and I thought everyone would probably ridicule me if I came out as straight... What's wrong with my mind? How can I peacefully embrace and maintain my gay identity? What Should I Do???