Bismillahir Rahmaanir Raheem.

Yes there is nothing wrong for a married couple to have sexual intercourse after breaking their fast but please remember to make the dua recommended by the prophet Muhammad peace be upon him.

Ibn 'Abbas (RA) reported: "The Prophet (Peace and Blessing upon Him) said, 'If you say the following invocation during sexual intercourse, and a baby is conceived, Satan would never harm that baby." Allahu Akbar.
Say:
Bismillah. Allahumma jannibna ash-shaytan wa jannibi ash-shytan ma razaqtana. Meaning
O Allah! Keep us away from Satan, and keep Satan away from any blessing you bestow on us. Al-Bukhari (Fath Al-Bari: 1/291) and Muslim. To learn how to recite it well please visit this link.

https://www.youtube.com/watch?v=suc6iG3JqSU

One Jinn told a Ruqya Expert, after his conversion to Islam and repentance, that he used to take part in a man's sexual intercourse with his wife, because that man did not say the above invocation. SubhaanAllah. Glory be to Allah! We have so many valuable treasures but we do not appreciate their value due to the fact that we refuse to learn our deen.


May Allah have mercy on us all and protect us from any satanic influences. Aameen.