Baby on the Way for Jessica Paré

10/28/2014 at 06:36 PM ET

Jessica Pare Pregnant Charley Gallay/Getty

As her hit show comes to an end, Jessica Paré is getting ready for a new beginning: She’s pregnant!

The Mad Men star is expecting her first child with boyfriend John Kastner, her rep confirms to PEOPLE. 

The happy news apparently flew under the radar for a while: Last month, Kastner, a musician, posted an Instagram photo of him and Paré, 33, hugging as his 7-year-old daughter Summer Lee proudly wore a T-shirt reading “I’M GOING TO BE A BIG SISTER.”

The stars, who are both Canadian, began dating in May 2012.

A post shared by johnkastner (@johnkastner) on

— Michele Corriston with reporting by Mia McNiece

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FILED UNDER: Expecting , Jessica Paré , News

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Showing 11 comments

Nancy on

Happy for her (them). Too bad about his hair. Gross.

ser0630 on

That is a cute picture! I love the big smile his daughter has on her face wearing that t-shirt.

Sunny on

Lol @ his hair.

Emily on

He doesn’t look nearly as happy as Jessica and the little girl. Doesn’t bode well.

Shirley on

Some people just don’t realize when they look ridiculous.

guest on

he’s just a liiiiittle too old for that style. That is for the under 30 crowd John…time to adjust.

AmelieButterfly on

I prediction Jessica Pare will have baby girl

Kat on

Online bio – he was born in the late 60s.

Adib on

Happy for them. Congratulations ! That instagram picture sent a clever message by symbolizes something. So sweet.

cds on

His hair is in Dredlocks — interesting. I’ve only seen Jamaican men and African American men wear their hair in “Dreds”. I wonder what made him wear his hair that way?

SimplyPut on

I’ve seen many white men/women with dreads… And I don’t think much about them, as I do any other color men/women that wear them.

To each his own…