The TOWIE star, 23, posted more selfies of him with nine-month-old Teddy, writing: "My love for this boy is indescribable". Aww.
GALLERY: JACQUELINE JOSSA'S LIFE IN PICTURES – DAN OSBORNE, EASTENDERS AND PRISON VISITS
When asked recently if he thought his boy is going to be a heartbreaker, he replied: "Definitely. 100 per cent."
He told a British magazine: "He's doing really well. I can't believe how quickly he's growing up. It's mad. He's standing up and if you ask him for a kiss when he's in a happy mood he'll give you one."
Alongside TOWIE, Dan has been pretty busy recently. He became Attitude magazine's in-house fitness guru and he also joined male strip group The Dreamboys.
READ: HOW WILL JACQUELINE JOSSA'S PREGNANCY AFFECT EASTENDERS' LAUREN BRANNING?
While things are going great professionally for Dan, he admits it makes it hard for him to be able to see his son every day.
He added: "When I'm working I can't get around to see him."
Essex boy Dan recently announced that he and girlfriend Jacqueline Jossa are expecting their first child together.
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The couple have been together for several months now, officially confirming their relationship earlier this year.
Of 21-year-old Jacqueline's pregnancy, Dan said earlier this week: "Becoming a father has been the most amazing thing to ever happen to me. I can't believe I'm going to be a dad again – I'm truly blessed."