I find it interesting in 1 Corin 7 Paul never called the fornicators to repent, he tells them to get married..
I'd strongly advise you to read I Corinthians chapter 6 which precedes what Paul said in chapter 7.
For example:
I Corinthians chapter 6
[
9]
Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,
[
10] Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners,
shall inherit the kingdom of God.
[
11]
And such were some of you: but ye are washed, but ye are sanctified, but ye are justified in the name of the Lord Jesus, and by the Spirit of our God
Paul clearly warned fornicators that they would not inherit the kingdom of God.
Furthermore, he clearly said "and such WERE some of you". In other words, they repented of their fornication unto salvation.
Which brings us to chapter 7...
I Corinthians chapter 7
[
1] Now concerning the things whereof ye wrote unto me: It is good for a man not to touch a woman.
[
2] Nevertheless,
to avoid fornication, let every man have his own wife, and let every woman have her own husband.
Paul's words were written "to AVOID fornication".
You make it sound as if he was telling fornicators that they didn't need to repent, but to just get married instead.
That's clearly NOT what Paul said.
The Corinthians were well aware that Paul instructed them to REPENT of fornication:
II Corinthians chapter 12
[
20] For I fear, lest, when I come, I shall not find you such as I would, and that I shall be found unto you such as ye would not: lest there be debates, envyings, wraths, strifes, backbitings, whisperings, swellings, tumults:
[
21] And lest, when I come again, my God will humble me among you, and that
I shall bewail many which have sinned already, and have not repented of the uncleanness and fornication and lasciviousness which they have committed.