Women don't want to imagine a man who is tiny and weaker than her. Women want the opposite of being feminine, they want tall men because it's masculine feature. Being tall is more masculine, being short is more feminine, seems weaker in peoples mind. Women want a man who is strong. A woman wouldn't really want a man who is weaker than her.

Why do women want stronger man? Taller men usually are stronger than shorter women. Women like strong men because they feel more feminine with stronger men. Besides of enjoying being picked up, women love tall, strong men because it's masculine characteristic in her mind.

More about why do women like tall men

Women usually don't in vision being attracted to shorter weaker men, because it isn't very masculine. She wants to feel as feminine as possible with you to be sure she will be attracted to you. If you are short and you can make her feel feminine then she won't care how short you are or how strong you are.

If you have a strong dominant personality even if you are short, if you have other masculine characteristics then you shouldn't worry about your height much. The key is to try to make her feel feminine. Show her that you aren't intimidated by her, show her that you are strong and powerful in your own way and it will be very attractive.