I head a drasha on Shidduchim, in short it says that a Bas Kol comes down from Heaven,the Shadchan is the Bas Kol.
It says that Shidduchim are harder to make then Kerias Yam Suf. one Pshat in this is the Yam Suf split into 12 parts for the 12 Tribes who would cross. The Yam Suf was like a a round cake cut into 10 pieces- therefore we can learn from this that every person will reach his Zivug, the point is ‘some take longer then others’ as shown that a cakes pieces cut along the cake, some are longer then others.
Before Moshiach, there will be a ‘Shidduch crisis’ as it says in Yevomos that Moshiach won’t come until all the Neshomos have departed from the Kisay Hakovod- by Peru and Revu–so this is almost happened, but not without the Satan stopping the process in the final years of Galus–then Moshiach will come and the Beis Hamikdash will be rebuilt-Bimhera V’Yameinu!