Not Feeling Desirable 💔😢

I was wondering if anyone could offer some advice for me. I have been feeling REALLY, REALLY BAD lately because of the fact that I'm a virgin and I've never had a boyfriend. I believe this has occurred because I'm fat (5'7, 228lbs). Although, I have not always been. I feel so disgusting, ugly, and undesirable and I just wish I had a companion and someone to love. Men have told me that I am beautiful or pretty, but they never want to date me. (Also, I am a black woman. And my culture values hips and butt, but I'm not curvy in that way and I'm SO INSECURE about it!) Deep down I know it's because of my weight. But I don't understand this because I've seen other girls who are the same weight or bigger than me who've had boyfriends. I just don't understand what is about me that no one wants to be with me! I've NEVER felt sexy or feminine or attractive or desirable in my life. These feelings are torturing me everyday. I'm 26 and I feel so underdeveloped in the area of love, sex, and relationships.

Does anyone have a similar experience? Has anyone ever felt feelings like this before?