Yes, in Ontario, you can sue your spouse for transmitting a Sexually Transmitted Infection (STI) by combining a civil tort claim (such as battery or negligence) with your family law application. You must prove they knew or ought to have known about their infection and recklessly or intentionally failed to disclose it to you.
Discovering infidelity is devastating, but discovering that an unfaithful spouse has transmitted a lifelong Sexually Transmitted Infection (STI) adds a layer of profound physical and psychological trauma. 🥺 In Ontario, family law traditionally operates on a “no-fault” basis regarding the breakdown of the marriage. This means a judge will not give you more of the house or higher spousal support simply because your partner cheated.
However, transmitting a disease crosses the line from a moral failure into civil liability. Ontario courts allow injured spouses to sue for civil torts-such as battery, negligence, or deceit-right alongside their divorce proceedings at the Superior Court of Justice. If your spouse knew they had herpes, HIV, or another serious STI and hid it from you while continuing to have unprotected sex, they have violated your bodily autonomy. You can seek significant financial damages to cover your lifelong medical distress, entirely separate from the standard division of family property.
Step-by-Step Process in Ontario
Combining a civil personal injury claim with a family law divorce is highly complex and requires aggressive, interdisciplinary legal strategy. 📝 Here is how you build an STI transmission case.
Step 1: Seek Medical Care and Document the Timeline
Your health is paramount. Get a full medical diagnosis immediately. 💉 For a lawsuit to succeed, you must establish a strict timeline. You need medical records showing you were clear of the infection prior to a certain date, and records confirming your new diagnosis. Keep all texts, emails, or WhatsApp messages where your spouse admits to cheating, admits to having symptoms, or apologizes for passing the infection to you.
Step 2: Hire a Dual-Focus Ontario Law Firm
Not all family lawyers handle civil torts. You must find a law firm in Toronto, Ottawa, or your local region that has experience litigating both family law and civil personal injury. They will ensure that your claim for “damages for civil battery” is properly integrated into your Form 8 (Application (General)).
Step 3: File the Combined Claim (Family & Civil)
Your lawyer will file the application at the Superior Court of Justice. 📄 The application will seek standard family relief (like equalization of property and spousal support) while simultaneously suing the spouse for tort damages. The claim will allege that by withholding their STI status, they negated your legal consent to sexual intercourse (battery) or failed in their duty of care (negligence).
Step 4: The Discovery Process and Medical Evidence
This is the most invasive step. Your lawyer will demand the spouse’s medical records to prove they were diagnosed with or treated for the STI before transmitting it to you. The spouse will likely be subjected to rigorous questioning under oath (an Examination for Discovery) to prove they “knew or ought to have known” they were infected.
How Much Does it Cost in Ontario?
Litigating a civil tort inside a family law dispute is extremely expensive because it effectively forces two massive lawsuits into one courtroom. 💰
- Lawyer Fees: Bringing an STI transmission case to trial can easily cost between $20,000 and $50,000+ CAD in legal fees. Unlike standard car accident torts, family lawyers rarely do this on a contingency fee (percentage of winnings) basis.
- Expert Medical Witnesses: You may need to hire medical specialists to testify about the lifelong impact of the disease, costing $3,000 to $8,000 CAD.
- Potential Damages: If successful, judges in Ontario frequently award between $15,000 and $100,000+ CAD in general and aggravated damages for the transmission of an incurable STI, depending on the severity of the disease and the deceit.
| Type of Legal Claim | What You Must Prove | Impact on the Case |
|---|---|---|
| Civil Battery | Intentional deceit negating sexual consent | High damages for violation of bodily autonomy |
| Negligence | They ignored symptoms and acted recklessly | Damages for breaching duty of care |
| Family Law (Equalization) | Mathematical division of marital assets | Calculated completely separate from tort damages |
How Long Does the Process Take?
Because you are injecting a complex personal injury claim into a divorce, the process slows down significantly. ⌛ Gathering medical records, conducting examinations for discovery, and waiting for a trial date at the Superior Court of Justice means this process typically takes 2 to 4 years to fully resolve if the spouse refuses to settle out of court.
Frequently Asked Questions (FAQ)
Does getting an STI increase my spousal support?
No. In Ontario, spousal support and property equalization are strictly mathematical calculations based on income, length of marriage, and asset values. Tort damages for the STI transmission are awarded as a completely separate lump sum on top of your family law entitlements.
Can my spouse go to jail for giving me an STI?
Yes, it is possible. Under the Criminal Code of Canada, intentionally withholding a serious STI diagnosis (like HIV) before having unprotected sex can negate consent, leading to criminal charges of Aggravated Sexual Assault. However, criminal charges are handled by the police and the Crown Attorney, not by your family lawyer in civil court.
What if they honestly didn’t know they had the STI?
If your spouse was completely asymptomatic and genuinely had no idea they were infected, it is very difficult to successfully sue them for battery or negligence. The law requires proving that they “knew or ought to have known”-for example, if they had glaring physical symptoms but chose to ignore them and not see a doctor.
Is there a time limit to sue my spouse for this?
No. While civil lawsuits in Ontario typically have a two-year limitation period, there is no limitation period for claims based on sexual assault or other misconduct of a sexual nature where the parties were in an intimate relationship (such as a marriage). Under Section 16(1)(h) and (h.2) of the Ontario Limitations Act, 2002, transmitting a serious STI without consent-due to withholding a diagnosis or symptoms-is treated as a form of sexual misconduct or assault because deceit negates sexual consent. Therefore, you can bring this civil claim at any time, without being barred by a two-year limit.
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