Yes, you can have a love marriage in Sikhi but there are certain restrictions. But before you do anything do an Ardaas (humble request) and you should tell your parents. Make it clear as there is nothing Gupt (hidden) in Sikhi. Get the parents involved, do a Hukamnama (command from SGGS Ji), do a Mangani (engagement), choose a date and get married. Don't go around like how people do nowadays. They're dating and hiding it from their parents.