The couple, who are expecting a child together, haven't had the smoothest of rides recently - and his ex-girlfriend Megan Tomlin seems to have had something to say about that.
After weeks of mystery surrounding Dan and Jacqueline's relationship, there are now reports of more drama between them.
According to The Mirror (Christmas Eve), Megan has directed some harsh words towards the EastEnders actress.
In an unprecedented verbal attack, Megan - who has a one-year-old son Teddy with reality TV star Dan - apparently blasts actress Jacqueline, 22, for her "rebound romance".
Teacher Megan Tomlin wrote on Instagram: "Lesson in life 1 - If you don't want to be a single mum don't PLAN a pregnancy without the guy knowing.
"2 (rewind a year to when I was pregnant) a good person doesn't get involved with a guy who came out of a relationship after a matter of weeks and has a baby on the way.
"3, rebound relationships never last."
She also added for good measure: "Finally have a lovely time in Liverpool in the bed I was in just last week (mind you wouldn't be the first time you've tried jumping in my place)."
Jacqueline, who plays Lauren Branning in the BBC1 soap, is expected to spend Christmas with Dan, who is in Liverpool for panto.
After going public with their romance in June, they announced they were expecting a child together months later.
But last month, Dan hinted at problems in their relationship when he tweeted: ""Relationships just do not seem to work."
They haven't been seen together since, and have not shared any photos on social media together.
Dan was with Megan for 18 months, but split up before she told him she was pregnant with his child.
Neither Dan nor Jacqueline had responded to the messages at the time of writing.
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