Kourtney Kardashian and Travis Barker’s chemistry is ‘off the charts’

Kourtney Kardashian has ‘off the charts’ chemistry with Travis Barker as their new relationship continues to go from strength to strength

Kourtney Kardashian and Travis Barker are going from strength to strength.

‘Their relationship has gotten more serious over the past two months,’ an insider told Us Weekly of Kourtney, 42, and Travis, 45.

The long-time friends recently turned romantic, and have not shied away from expressing their affection for one another out in public and on Instagram.

Love is in the air: Kourtney Kardashian and Travis Barker have been going from strength to strength ever since becoming romantic a few months ago 

Over the weekend, Travis shouted his feelings for Kourtney from the virtual rooftop when he posted a slideshow of steamy snaps, along with the declaration, ‘I f***ing love you!’

‘Travis’ post on Instagram was just him wanting to let everyone in the world know how crazy he is about her,’ the insider continued. ‘They love each other very much and their chemistry is off the charts.’

Insiders say Kourtney’s newfound self-confidence has aided in the development of their relationship.

‘She’s really happy with Travis and she’s gotten a lot of approval on him as well,’ the source said.

Steamy: Travis marked Kourtney's birthday with a slew of passionate snaps

Steamy: Travis marked Kourtney’s birthday with a slew of passionate snaps 

Just the two of us: The couple shared an embrace by a roaring fire

Just the two of us: The couple shared an embrace by a roaring fire 

‘He gets her and they have fun.’

Indeed, the couple do seem to be having tons of fun together, whether they are at the beach or grabbing dinner together.

Kourtney and Travis have been seeing each other for several months now, though were friends long before they ever started dating.

The couple went Instagram official on Valentine’s Day when Kourtney posted a snap of herself holding hands with the Blink-182 drummer to her account.

Flower power: The reality star was lavished with flowers from Travis on her birthday weekend

Flower power: The reality star was lavished with flowers from Travis on her birthday weekend 

Further showcasing just how serious they had gotten, Travis even got Kourtney’s name tattooed onto his chest.

‘I’m spending time with a woman who’s a great mom, who’s a great friend, and you don’t have to worry about any of those things,’ Travis recently told Drew Barrymore on her eponymous talk show.

‘It just comes natural, it’s like a maturity thing.’

Prior to her relationship with Travis, Kourtney was in a long-term relationship with Scott Disick. They share sons Mason, 11, Reign, six, and daughter Penelope, eight. 

Former flame: Prior to her relationship with Travis, Kourtney was in a long-term relationship with Scott Disick

Former flame: Prior to her relationship with Travis, Kourtney was in a long-term relationship with Scott Disick