Does Husband fasting while being impure for having sexual intercourse with his wife at night permissible?
                                Yes it is permissible for you to fast because impurity isn't among valid fasting conditions, but you are obliged to perform ritual impurity in order to catch up Fajr prayer at its due time. And Allah Knows Best.    
                             
                        
                            
                                
                                Is it permissible for a Muslim to slaughter an Aqeeqah on behalf of someone else, and offer it to him as a gift?
                                In principle, the guardian is the one who should offer the Aqeeqah (the sheep slaughtered on the seventh day from the child`s birth) because he is obliged to provide for the newborn, and it is impermissible for anyone else to slaughter it on his behalf unless with his consent. However, it is permissible for a person to offer the sheep, or its price as a gift to the guardian of the newborn, and then the latter can slaughter it, or deputies someone else to do that on his behalf.
                             
                        
                            
                                
                                I`m in love with a certain man, and want to marry him in particular, but my family refused that, what should I do?
                                The father should know what is in the best interest of his daughter and consider her situation. On her part, the daughter should trust her father`s view point as far as suitors are concerned. Moreover, it is prohibited for any woman, or girl to get involved in a relation with a non-Mahram (Marriageable man).
                             
                        
                            
                                
                                Does touching one's wife invalidate ablution?
                                Touching the wife according to the Shafi'ee's doctrine invalidate husband's ablution. And Allah Knows Best.