Only...only...ONLY the BLOOD OF JESUS can cleanse us from sin.
Marrying the person with which one is sinning with has NO BEARING on the matter.... or I should say no HEAVENLY BEARING on the matter. It might make us feel good in the earthly realm... it's like having a shotgun wedding and hoping that nobody will do the math.... But the Lord knows.... so repent, confess the sin, and go and sin no more and if you're burning, get married... but think about the difference between some sexual burning or possibly entering into marital covenant with someone with whom one is not compatible outside of sex....
Is there a way to know which is worse: some sexual burning or a bad marriage? Not saying that two burning folk who get married will have a bad marriage but if sex was the biggest part of the relationship...?????