Husbands and wives are not allowed to have sex while they are fasting. If they have sex and break the fast, the penalty is fasting for an additional sixty days or feed six poor people. Unmarried couples are required to stay away from each other and ensure that they avoid anything that could damage or break their fast.
Can you sleep with your boyfriend during Ramadan?
In this holy month, muslims generally fast to control their lust. We are not allowed to eat, drink, and have sex during the day.
Can you see your girlfriend during Ramadan?
In islam there is no concept of Girl friend and Boy friend. Islam only allow simple wedding . After wedding you are allowed to see your wife in Ramadan. Because seeing a girl who is not mahram(a person with whom you cannot marry) to you , is a sin.