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My Ex is Expecting – My Kids Are About to Get a Half Sibling

Published: July 12, 2013

Last Updated: September 12, 2025

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My Ex is Expecting – My Kids Are About to Get a Half Sibling

Once you’ve wrapped up all the loose ends with your Richmond Hill divorce lawyer and your marriage is over, it’s reasonable to expect that both you and your ex will move on. When that happens, you may have to deal with new people coming into your kids’ lives—including new half-siblings. If your ex is expecting, how should you broach the subject with your kids? Is there a right way or a wrong way?

What to Say to the Kids

Once your ex has told them that there’s a new baby on the way, your kids might experience a wide range of emotions based on how old they are, how solid their parent-child relationships are and their unique personality types.

The most important thing you can do is listen. Don’t impose your opinions on them; they’ll form their own. Most psychologists recommend answering questions honestly (and age-appropriately, of course) and encouraging open dialogue.

What Your Kids Might be Confused About

Some kids aren’t sure how the new half-sibling will factor in their relationships with you and your ex. Younger kids might think the new sibling is somehow connected to you and be concerned that they’ll have to share both parents; older kids might not be sure how the puzzle fits together or what they should call the new arrival.

Half-Brother/Half-Sister or Brother/Sister?

Since blended families are becoming the norm, many people no longer use the term “half-“ to precede brother or sister. Whether your family adopts the term or decides to avoid labels that could be hurtful, it’s best to talk to your ex and make sure you’re all on the same page. Like all other aspects of co-parenting, this is a subject worth discussing.

When to Call Your Richmond Hill Divorce Lawyer

When your ex’s new baby arrives, continue talking to your kids to make sure they are adjusting well. If you suspect they’re not, it can’t hurt to call your Richmond Hill divorce lawyer to ask for a referral to a therapist who is well versed in blended families. Additionally, if you suspect your ex is incapable of caring for your kids as well as hers, or if your children are being neglected or abused, call your lawyer immediately. He or she may be able to work toward a modified custody agreement so your kids get the attention and care they deserve.

Written by Lisa Gelman

Senior Lawyer

Senior Lawyer Lisa Gelman has over 25 years of family law experience and founded Gelman & Associates to provide strategic legal counsel in family law matters concerning divorce, parenting, separation, and more.

Frequently Asked Questions - divorce & separation

If you or your spouse are not in Canada, you can not get a divorce. However, you can end your marriage under the Civil Marriage Act. You can only end your marriage in Canada and not another country because your marriage is only valid in Canada.

Yes, you can date while separated in Canada. However, there is a legal implication to that. If the timing of your new relationship comes into question during your divorce, your relationship may be considered as an affair or adultery.

Yes. Our legal services are available in person, online, and over the phone. In addition, although our main office is located in Toronto, we have over 8 additional satellite offices located throughout central, southern, western, and eastern Ontario to serve family law clients across the province.

If you are litigating your matter, social media posts made by your spouse or partner may be relevant, especially if they contradict what your spouse is claiming in his or her pleadings.

For example, if a spouse is claiming financial hardship, a Facebook post that shows that spouse going on an expensive trip or posing with an expensive car can undermine such claim and potentially affect that party’s credibility in court if presented as evidence on a motion or at trial.

Further to photograph-based posts, statements that are made on social media by one party can be relevant if said posts (i) are related to the litigation, to issues of parenting and/or (b) contradict statements that were made by the party in his or her pleadings. For example, if a party is attempting to establish that he or she is an appropriate custodial parent, then recent social media posts about extensive partying and drug use made by that party may be relevant in court, as they may speak to that party’s fitness when it comes to appropriate supervision of a child in his or her care.

Yes, you can separate from your spouse. Separation does not have to lead to divorce. However, if you plan to remarry, you must file for divorce after one year of separation. Also, you may want to consider that if you just leave, your spouse may file for spousal support or child support.

It is advised however that before leaving, you try to have a separation agreement with your spouse.

Divorce can be a difficult decision to make, especially if you’re unsure if your partner will sign the petition. However, a divorce does not require your partner’s consent. Although it may be a long process if your partner doesn’t comply, they will not be able to stop you indefinitely.

The only ground for a divorce in Canada’s Divorce Act is marriage breakdown. This could include spousal infidelity, although infidelity alone could be difficult and emotionally taxing to prove in court.

You are not legally required to retain a lawyer to apply for divorce. However, a divorce application may involve important questions about parenting, support, property and procedural requirements. Independent legal advice can help you understand how a proposed agreement or court application may affect you.

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