Yes, in California, you can obtain a restraining order against someone who is not a current or former spouse. The law provides protection through restraining orders for a variety of relationships, including dating partners, cohabitants, family members, and individuals with whom you have a child in common. The specific requirements and options may vary depending on the nature of your relationship with the individual and the circumstances of the situation. It is advisable to consult with an attorney who specializes in domestic violence cases to understand the legal process and seek the appropriate protection based on your specific situation.