i'll be contrarian here
there is some truth to what she is saying; however, it only corresponds to mama's boys.
date a man who comes from a good family, both parents still together etc. and thatll be less of an issue. She probably wouldnt know though, cause she prolly comes from a single mother or only dates men raised by single mothers.
on the flipside, a man who is there for his mom when he needs it is a good thing as long as he knows how to set boundaries and balance things. a lot of men dont know how to do that.