It really depends on their level of Emunah.
Age, and years dating, also hardship in finding someone they actually like should be taken into consideration.
I know guys that take it harder than girls.
Usually though shlishi is right. Girls take it harder.
Since they are more emotionally involved they tend to picture
or imagine futures way before guys would. This makes it that much more painful. Not to mention that they are very conscious about their appearance. Not so self confident by nature as men are.
When I was faced with decisions while dating It would pain me to say no, knowing sometimes what the girl might be going through.
However hard it is for them, they should know that their weakness is also their very strength, and it should be appreciated.
A strong Emunah in HB”H’s plan should allow everyone, guys and girls to move on to something better not being bothered by something that wasn’t for them. If it was, it will come back.
Always be aware of who is running the show.
Especially in Shidduchim, where HB”H allows us to clearly see his
hand in all that he does for us, if we were only look through eyes wise with that knowledge.