He flirted with a girl in Ramaadan and broke his fast to punish himself
Question

                I was living in Europe for a long time, 16 years, until I finished my university studies, and I was 22 years old. During the month of Ramadaan, I met a girl by accident in the university residence, which was mixed. I was fasting but the Shaytaan defeated me and I tried to flirt with her and play with her and kiss her. But then I went back to my room regretting what I had done. Then I said: I am a Muslim and I did this in Ramadaan; because of what I have done, I do not deserve to join the sincere daa’iyahs with whom I used to meet every day, and I do not deserve this goodness. By doing this I have definitely broken the fast, and I probably have to do ghusl because of madhiy. Then I drank some water to punish myself and I broke the fast that day. What should I do? Please advise me, may Allaah reward you with good.
Praise be to Allah.
    What happened to you is one of the effects of staying in a 
    kaafir country and studying in a mixed environment. Hence the scholars 
    warned against that a great deal. We praise Allaah for having guided you and 
    protected you from doing anything more serious than that. 

    You made a great mistake by deliberately breaking the fast 
    during the day in Ramadaan. You should have asked Allaah to forgive you for 
    what you did with that girl, and you should have completed your fast. 

    You should note that some of the greatest means that the 
    Shaytaan uses to keep people away from the right path is to keep them from 
    having good friends or from doing good deeds by making them think that they 
    do not deserve that. 

    The result of this keeping away from good deeds and good 
    people may be worse than the sin that led to it in the first place. Hence 
    the wise man is the one who does not let one sin lead him to another, rather 
    he hastens to repent from it and looks for more good people to be close to 
    and does more righteous deeds. “Good deeds erase bad deeds.” 

    With regard to the emission of madhiy (prostatic fluid), this 
    does not invalidate the fast according to the more correct of the two 
    scholarly opinions. This is the view of Abu Haneefah and al-Shaafa’i, and 
    was the view favoured by Shaykh al-Islam Ibn Taymiyah (may Allaah have mercy 
    on him). Al-Mughni, 3/20; al-Ikhtiyaaraat al-Fiqhiyyah, p. 97. 
    See also questions no. 38074. 

    But you are not certain whether you emitted madhiy or not. 

    No ghusl is required in the case of madhiy, but it is naajis 
    (impure) and invalidates wudoo’, and it sufficient to sprinkle water on any 
    affected areas of clothing. See question no.
    34172. 

    You have to make up the day when you broke your fast, and 
    repent to Allaah, but you do not have to offer the burdensome expiation, 
    because that applies only in the case of intercourse, according to the more 
    correct of the two scholarly opinions, which is also the view of al-Shaafa’i 
    and Ahmad. 

    But if you have delayed making up that day until the next Ramadaan comes, then as well as making up the day you have to offer expiation for delaying it, by feeding one poor person half a saa’ of food, which is approximately one and a half kilograms. See question no.
    38867. 
And Allaah knows best.