Of course it happens to women as well, but is all about thinking with your head and not some other body part! The grass is never greener and all that.
Who will ever be a 100% anyway, I don't think it is healthy for you to get 100% of what you need from someone else. What ever happened to making yourself happy first and being able to rely on yourself before depending on others.
In practice if you depend on someone else too much you could drive them away.