In 1 Cor. 7 the Apostle Paul addresses pretty much every marital situation that I can think of...singleness, marriage, divorce, etc...it's all in there.

To those that would pursue marriage, Paul says "it's better to marry than to burn with lust." (vs. 2, 9). This is not the most romantic description of marriage, but it reveals Paul's desire for them to live holy lives. Elsewhere, Paul instructs husbands to prioritize the spiritual growth of their wives (Eph. 5.26-27). 𝗣𝗮𝘂𝗹'𝘀 𝗱𝗲𝘀𝗶𝗿𝗲 𝗳𝗼𝗿 𝗺𝗮𝗿𝗿𝗶𝗮𝗴𝗲 𝗶𝘀 𝘁𝗵𝗮𝘁 𝗶𝘁 𝗿𝗲𝘀𝘂𝗹𝘁𝘀 𝗶𝗻 𝘁𝗵𝗲 𝘀𝗮𝗻𝗰𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗼𝗳 𝗯𝗼𝘁𝗵 𝗽𝗮𝗿𝘁𝗶𝗲𝘀.

To the Christian who comes to Christ later in life and finds themselves married to a person who does not share their religious convictions, Paul instructs them to remain faithful to their spouse in order to be a sanctifying influence on the unbelieving spouse as well as the children (vs. 12-14). 𝗣𝗮𝘂𝗹'𝘀 𝗱𝗲𝘀𝗶𝗿𝗲 𝗳𝗼𝗿 𝘁𝗵𝗲 𝗳𝗮𝗶𝘁𝗵𝗳𝘂𝗹𝗻𝗲𝘀𝘀 𝗼𝗳 𝘁𝗵𝗲 𝗯𝗲𝗹𝗶𝗲𝘃𝗶𝗻𝗴 𝘀𝗽𝗼𝘂𝘀𝗲 𝗶𝘀 𝘁𝗵𝗮𝘁 𝗶𝘁 𝗿𝗲𝘀𝘂𝗹𝘁𝘀 𝗶𝗻 𝘁𝗵𝗲 𝘀𝗮𝗻𝗰𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗼𝗳 𝘁𝗵𝗲 𝗲𝗻𝘁𝗶𝗿𝗲 𝗵𝗼𝘂𝘀𝗲𝗵𝗼𝗹𝗱.

To the single, Paul (who was single himself) says that they should "secure undistracted devotion to the Lord" (vs. 35). Everyone experiences singleness at some point - no one is born married. And many who are currently married will be single again at some point in their lives. Because of this, the church needs to develop a more comprehensive view of singleness - more than simply "abstinence." According to this passage, the purpose of singleness is "undistracted devotion to the Lord." We ought to be helping single people understand the purpose of the season of life that that they are experiencing, not just telling them what they can't do until they are married. 𝗣𝗮𝘂𝗹'𝘀 𝗱𝗲𝘀𝗶𝗿𝗲 𝗳𝗼𝗿 𝘀𝗶𝗻𝗴𝗹𝗲𝗻𝗲𝘀𝘀 𝗶𝘀 𝘁𝗵𝗮𝘁 𝗶𝘁 𝗿𝗲𝘀𝘂𝗹𝘁𝘀 𝗶𝗻 𝘁𝗵𝗲 𝘀𝗶𝗻𝗴𝗹𝗲 𝗽𝗲𝗿𝘀𝗼𝗻'𝘀 𝘀𝗮𝗻𝗰𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻.

Basically, no matter the situation that you find yourself in, Paul wants it to result in your sanctification.

Here's a startling fact; most of what we know about marriage from the NT comes from single people - Jesus and Paul specifically. Jesus and Paul were qualified to teach about marriage not based on their personal experience, but because they taught the Word of God. I would rather take marriage advice from a single person who was saturated with the Bible and full of the Holy Spirit, than a married person who was carnal and selfish.