Proving that the couple are pretty serious about each other, Spencer shared a photo of the pair wearing matching grey onesies!
With Lauren flashing her bra, and Spencer revealing his Calvin Klein pants, the pair pulled off their best poses in front of a mirror.
"Like this shot... best wing-woman.. @iamlaurenhutton #Smug #High5 #MadeInCheslea," said Spencer.
Commenting on another photo, he added: "Top gun night at the Matthews household with my top bird @iamlaurenhutton."
On last night's episode (8 December), Spencer made his return to Chelsea after a short break away, and he couldn't have looked happier as he told Jamie Laing, Alex Mytton and Andy Jordan about his new romance.
"I was seeing this girl and I took her to the south of France, and we quite enjoyed that," Spencer told them. "And then I took her to Ibiza and she came to Scotland to meet the family. She's my girlfriend mate."
Lothario Spencer, who has openly admitted to being unfaithful in previous relationships, continued: "I'm being faithful. No one ever believes me, but I am. I don't see the point in having a girlfriend now if I am just going to cheat on her.
"I'm healthy, I have a girlfriend that I like and I'm back in London; all is well."
Later in the episode, Lauren got introduced to Spencer's ex-girlfriends Stephanie Pratt and Lucy Watson - awkward much?
Having been cheated on by Spencer before, Stephanie warned Lauren about Spencer's cheating past. However, later on, Stephanie told Tiffany Watson that she thinks Lauren wasn't taking her advice on board and said she was acting quite "smug".
The short teaser for next week's episode shows things getting heated between Stephanie and Spencer, as he accuses her of meddling in his relationship!
Made In Chelsea airs every Monday at 9pm on E4.
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