IMHO, God doesn't just say no, at least, not just like that.
Firstly
Psalm 34:7 says:
Delight yourself in the LORD and he will give you the desires of your heart.
I know it has to be in God's will for Him to give it to you, but marriage IMO is desireable for most people who are ready for it, or prepared enough in God's eyes. He may want us to get to a certain place first, who knows. Not to say that we must "qualify" to be married, but I'm sure God knows what he is doing in orchestrating things...
Secondly I believe marraige is a choice, though the verses below from
1 Corinthians 7: 1-5 and
8 may seem out f context, I personally feel it illuminates the fact that we have a choice to get married or not. Secondly, I think it shows God understands what people want to have sex. (Obviously never marry just for sex) The verses also illustrate its importance of marraige in reducing sexual immorality:
"1Now for the matters you wrote about: It is good for a man not to marry.[
a] 2But since there is so much immorality, each man should have his own wife, and each woman her own husband. 3The husband should fulfill his marital duty to his wife, and likewise the wife to her husband. 4The wife's body does not belong to her alone but also to her husband. In the same way, the husband's body does not belong to him alone but also to his wife. 5Do not deprive each other except by mutual consent and for a time, so that you may devote yourselves to prayer. Then come together again so that Satan will not tempt you because of your lack of self-control.
8So then, he who marries the virgin does right, but he who does not marry her does even better.[
b]
I feel the following also shows that we have a choice in the matter, but some are made eunuchs. IMO these are naturally asexual people.
Matthew 19:12
For some are
eunuchs because they were born that way; others were made that way by men; and others have renounced marriage because of the kingdom of heaven. The one who can accept this should accept it."
So in the end of it all I do believe marriage is desireable for most people in God at some point in time. But after all it is between you and God. If he tells you "no", though I have never heard of this, surely there is a reason and what seemed good to you wasn't right for you anyway. In the meantime, if God hasn't said anything to you on it, you may well have nothing to worry about.
In short we can say what we want- but let him tell you
All the best