Proposing to a man has become more or less a sin in Africa and the world at large where society frawns on and tag ladies who propose as losers. Well it is rare. However, there some cultures that permit women to propose. A typical example is the Prophet of Islam, Mohammed peace and blessings be upon him and his wife Khadija biant Kholyayld. Another example is the people of Orango Island in Guinea Bissau.
Yes, they could be the ones telling their boyfriends when they back down to express their love for their girlfriends.
So it is not new nor bad nor shameful that a lady proposes. It means she is confident, honest and self reliant person. She might also not believe in traditional gender roles.
Shyness in this case is a problem that obstruct ladies to approach their dream guys which I may say they aren’t strong enough and when they finally gather courage, they get cold feet.
Fear of rejection on the other hand is another problem, even guys fear rejection talk more of ladies. This sometimes can be a psychological problem.
I also believe that some ladies are arrogant and full of themselves, they can’t imagine approaching a guy but rather have it in mind that the guys alone should be doing it.
Meanwhile guys will always tag ladies who propose as losers and an easy to catch and sometimes be considered as distasteful by many if they have no attraction for the said lady.