Regarding what IUsebrains wrote: There is a bigger mitzva to remarry your divorcee then to get married in the first place.
There is the following story. A man comes to the Rabbi to get divorced. He hands the “Get” to his wife, and immediately thereafter calls out “Harei At Mekudeshes Li”. The Rabbi turns around to him and says, “Are you crazy?” The man says, no “absolutely not”, it’s just that for a “Zivug Sheini” she is OK.