She is afraid that her marriage may not be successful because she got to know him before marriage
Question

                I read on your website in several places something that made me want to ask about love before marriage. I am a woman who is married to a religiously committed young man, and praise be to Allah he prays and fasts and does his duties in the best manner as he is supposed to. Praise be to Allah, I fear Allah a great deal and I have a strong desire to draw closer and closer to Him. But I got to know this person before marriage, although nothing happened in this relationship to be ashamed of, but he is from one city and I am from another city, and he came to get to know me more and more. But I read that if one likes another person before marriage or sits with him, Allah will not bless them in their relationship, and I am very scared. How can I expiate for my sin? Please note that when I sat with him it was in public places.

I hope that you can help me so that Allah will make my marriage to this person successful, because I fear Allah above everything else.
Praise be to Allah.
      What is meant by the love that is forbidden before marriage 
      is a relationship between a man and a woman that includes haraam things 
      such as looking, touching, shaking hands, being alone together, romantic 
      words, the woman softening her voice, and so on. There is no doubt that 
      this is haraam because what it involves is haraam. 

    For information on the prohibition on the things mentioned 
    above, see the answer to question no.
    103044. 

    Love may occur without a person choosing that and without 
    doing any haraam things, such as if a woman hears of a man who is of good 
    character and starts liking him. She is not to be blamed for this so long as 
    it is not followed by anything haraam. 

    If a man wants to propose to a woman, it is permissible for 
    him to look at her and to meet her in the presence of her mahram. 

    No matter what the nature of the love and relationship before 
    marriage, if a person committed any wrong action in that case, then he has 
    to seek forgiveness and repent, for Allah forgives sin, accepts repentance 
    and erases bad deeds. 

    If we assume that you overstepped the mark with regard to 
    saying something inappropriate or shaking hands and the like, then all you 
    have to do is ask for forgiveness. Allah has blessed you with marriage to a 
    righteous young man, so praise Allah, may He be exalted, and think 
    positively of Him, and hope for the goodness, blessing and success that He 
    may bestow. 

    No one can be certain that the one who falls in love before 
    marriage will not be blessed in his marriage. This is a matter of the unseen 
    that no one knows except Allah. The most that can be said is that haraam 
    love may be a cause of the marriage not being blessed, because a person may 
    be deprived of provision because of a sin that he committed, as the Prophet 
    (blessings and peace of Allah be upon him) said: “…a man may be deprived of 
    provision by a sin that he commits.” Narrated by Ibn Maajah (4022) and 
    classed as hasan by al-Albaani in Saheeh Ibn Maajah. 

    But if a person repents and turns to Allah, there is the hope 
    that he will be successful with Allah’s help, and that his bad deeds will be 
    turned into good deeds. 

    So have faith in Allah, may He be exalted, and put your fears 
    aside; seek the forgiveness of Allah from all sins, minor and major, and you 
    will be fine, praise be to Allah. 

    And Allah knows best.