One question to always ask anyone setting you up, is this: “would this person be acceptable to you for your child? Why or why not?”
I know someone whose daughter married someone with a great recommendation from his Rosh Yeshiva. Two years and a child later, the Choson decided he didn’t want to be Frum anymore. While conceivably that could possibly happen in any case, but not here.
When the mother (the father was niftar years earlier) went to the Rosh Yeshiva and said to him, “how could you do this to my daughter,” The Rosh Yeshiva answered, “We thought that if he got married, he would straighten out.”
So this Rosh Yeshiva ruined some lives on the hope that someone would straighten out, knowing that a serious problem existed. Notice that he didn’t set up his own daughter with that guy.
So, don’t forget to ask “would this person be acceptable to you for your child? Why or why not?”