Joe Manganiello has made his new romance with Caitlin O'Connor Instagram official.

The 47-year-old 'True Blood' actor has been dating actress/model O'Connor, 34, since September last year following his split from 'Modern Family' star Sofía Vergara after seven years of marriage and now he's declared his love for her publicly by sharing pictures of their romantic Valentine's Day celebrations.

In a post on the photo-sharing site, Manganiello described his week revealing he carried out some promo work for TV show 'Deal or No Deal Island', shot a music video and spent Valentine's Day with Caitlin at a Tool gig.

He wrote: "The week in review… As we are almost a week away from the ‘Deal or No Deal Island’ premiere Monday February 26th, we got together at Hollywood and Highland to play some games with the crowd of fans that showed up …

“I headed off-grid to shoot a music video with my buddy Billy Morrison while [his dog] Bubbles made a new friend … Found some time to get some shading done with [tattoo artist] Small Paul … And celebrated Valentine’s Day with Tool and Caitlin …"

Manganiello added a selfie taken by the loved-up couple at the gig, as well as another snap showing O'Connor standing next to a huge bouquet of red roses and a box of Valentine's Day chocolates.

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The move comes just days after it was reported the pair had taken their relationship to the next level by moving in together.

TMZ.com now reported last week that the pair have set up home together, adding they are "very much in love" and Manganiello's beloved dog Bubbles has given O'Connor the" seal of approval".

News of the pair's new living situation came just a week after Manganiello finalised his divorce from ex-wife Sofia.

According to a filing obtained by PEOPLE, the divorce is proceeding as an uncontested action, which means that both parties appeared and "entered into a written agreement regarding their property and their marriage ... which is being or has been submitted to the court".

Vergara and Manganiello announced their split last July seven years after they tied the knot.

BANG Showbiz