Romelo played for Cronulla-Sutherland's Jersey Flegg before joining Penrith. In 2008, he signed with the Penrith Panthers and played for the Panthers' Toyota Cup in 2008 and 2009, scoring 22 tries in 41 games. In February 2009, Romelo came to blows with Panthers teammate, Trent Waterhouse after Waterhouse resented a tackle by Romelo in training. In Round 8 of the 2009 NRL season Romelo made his NRL debut for the Panthers against the Canberra Raiders. He went on to play 2 more games in first-grade that year. After the conclusion of the 2009 season, Romelo was named in the 2009 NYC Team of the Year. In March 2010, Romelo signed a contract with the Canterbury-Bankstown Bulldogs. After playing in Canterbury's NSW Cup reserve-grade side, Romelo made his debut for Canterbury-Bankstown against his former club, Penrith, in round 11 of the 2010 NRL season. In the 2012 NRL season, Romelo played 13 games for Canterbury as the club won the Minor Premiership. Romelo did not feature in the club's finals campaign or the 2012 NRL Grand Final loss to Melbourne. On 23 January 2014, Romelo signed a one-year contract with the Melbourne Storm starting in the same year. On 6 November 2014, Romelo signed with Queensland Cup team Eastern Suburbs Tigers full time for the 2015 season.
Controversy
In 2007, Romelo was sacked by Cronulla-Sutherland for disciplinary reasons. Early in 2010, Romelo was sacked from the Penrith club for disciplinary reasons. It was later revealed that Romelo was terminated due to a drink driving offence. Romelo spoke to the Daily Telegraph saying "I lost my licence for DUI, so I catch the train to Homebush and back, It's about a 45-minute trip and I have to change at Lidcombe and then walk to the training ground from Olympic Park station, "I went through a difficult time and I've got mixed emotions about Penrith. On one hand I was badly behaved, but there were other players who did much worse and who weren't sacked. I'm not going to say who they were because I've still got heaps of mates there, but it did feel like there were double standards". In 2016, Romelo was charged following a police bust of an alleged ice-dealing syndicate in Darwin. Romelo was arrested after a tip-off through the Dob in a Dealer campaign. Romelo was pulled over by police and was found to have 14g of methamphetamine in the vehicle. Police then raided Romelo's home finding another 2g of methamphetamine and $10,000 in cash, and arrested another associate who was at the property. Romelo was in breach of bail and was remanded in custody to appear again on May 4 2016. In August 2017, Romelo was jailed for two years and disqualified from driving for the same period over drug dealing charges. In 2019, Romelo was jailed for three years and four months after being convicted of two high speed chases in stolen cars and a brutal attack on his ex-girlfriend which broke her eye socket. It was alleged that Romelo ripped chunks from her hair, punched and choked her until she almost lost consciousness, because she didn’t give him her phone passcode.
