From Reality is Not Optional:

The Bible does not hold this fatalistic approach to marriage:

Paul gives widows the liberty to remarriage whomever “she wishes” (1 Cor 7:39). Paul advises people not to marry at all (1Co 7:8). Jesus is confronted by a scenario where seven brothers married the same lady (Luk 20:29). This handing down of wives to surviving brothers was ubiquitous in the Jewish culture. Jesus allows divorce (Mat 5:32), and Paul allows divorce (1Co 7:15). And Paul also warns Christians not to marry unbelievers (2Co 6:14). In each of these cases, fatalism is not assumed into the text although this would have been the perfect place to add “by the way, God has your special person chosen for you”. The Bible treats marriage as open, where any number of people could be sufficient for a spouse.