Longing (verb): having a strong wish or desire.
I would say that's Biblical. God longed for redemption for His people and so He sent Jesus. Jesus longs for intimacy with His children and so He gave His life and left us the Holy Spirit. Longings. Holy longings. What about longing for marriage?
Marriage is ordained by God. Biblical marriage is blessed by God. Marriage is good. Longing for good things blessed and ordained by God is good. Amen. I used to think that I hadn't "trusted the Lord with my singleness" because I was still wanting to be married. That is a false belief system that I will try to explain with the following story.
All my life I have been longing to do missions, particularly overseas. Yes, there is something exotic about the idea of adventures around the world, but also He has commanded us to go and tell the nations about Him. I want to do that. I wanted to do it so badly sophomore year of college that I made myself sick - trying to figure out when and where, manipulating situations, jumping at every thought and opportunity, and anxiously fearing that I would never get to go. I was physically sick from trying to control my desires. I was miserable.
In a sermon I heard during that time, the pastor talked about having an open hand on our desires - open, so that the Lord could give and take away as He pleases (Job). I reluctantly relinquished my tight grip and stored up my desires in my heart. They never went away, but the Lord faithfully taught me to hold tightly to only Him, so that then He could take me where He wanted me to be. (I call this effect "growing down" in my own sort of lingo.)
Friends, the Lord is faithful. I encourage each of you to read Psalm 139 and read it slowly. Let the Truth sink in. He knows your longings. There isn't a thought in your mind, or a wish in your heart that He has not seen and noted. And He loves you. Oh, how He loves you.
This summer, I will be going to Africa to do Speech Therapy and minister to the people there. Speech therapy - a field I unenthusiastically joined, but joined due to the unmistakeable call of God towards it. A field that I thought I was giving up dreams to be a part of. I thought that God was taking away some of my longings that were laid out in my open hands, when in fact, He was just asking me to trust Him. Praise Jesus.
Marriage, my friends, is just another opportunity to trust Jesus and then let Him astound and bless you. It's okay to long for it, as long as we are trusting Him with that longing. Keep it in those open hands. It's hard to add things to a closed fist. Let's not let our tight grip prevent us from receiving the blessings God wants to give us.