The blonde reality TV star recently rekindled her relationship with her on/off husband after splitting in April and is now enjoying spending lots of quality time with him.
Speaking at a Halloween party in Las Vegas over the weekend, Heidi said: "Fortunately, we are together. It's been a long summer, and we are together, and I'm so excited to be in Vegas together.
"I'm enjoying our relationship. I had so much going on before, I didn't have a chance to enjoy being a newlywed."
Heidi and Spencer - who met on the set of reality TV show 'The Hills' - announced they were splitting in April and she filed for divorce two months later.
However, it was soon rumoured they had rekindled their romance and had been secretly living together in a $5.5 million mansion in Malibu throughout the summer before relocating to Costa Rica.
A source said at the time: "Heidi and Spencer made some very expensive upgrades to the house, without the owner's permission. Wanting to keep prying eyes away, they planted 20 foot tall trees along The Front of the house against the wall. They also took it upon themselves to change the pool from chlorine to salt water which was very, very expensive. Spencer really loved the house but all of a sudden the owner was notified that they were moving to Costa Rica."