It was alleged that he was caught kissing Love Island star Alexandra Cane earlier this year, something the reality stars have both vehemently denied.
And now Dan Osborne, 27, was pictured chatting to a mystery brunette while he partied with pals at Ceasars Palace's Venus Pool Club in Las Vegas on Sunday.
The former Celebrity Big Brother star appeared to be having the time of his life on his boys' trip to Sin City while his wife Jacquelina Jossa, 26, parties a little closer to home in Ibiza.
Spotted: Dan Osborne, 27, was pictured chatting to a mystery brunette while he partied with pals at the Venus Pool Club at Ceasars Palace in Las Vegas on Sunday
TOWIE star Dan appeared in jovial spirits as he soaked up the sun and pool party's atmosphere while flanked by his pals.
The personal trainer, who showcased his muscular physique in a pair of black swim trunks, was seen chatting to a female reveller, who was clad in a black cutout swimsuit, during his afternoon of partying.
Dan, who last visited Las Vegas a mere six weeks ago, happily spoke to the women, who had also been chatting to other members of the group. MailOnline contacted Dan Osborne's rep for comment.
His appearance comes as his other half Jacqueline is enjoying a girls' trip to Ibiza with clothing brand I Saw It First.
Party: The former Celebrity Big Brother star appeared to be having the time of his life on his boys' trip to Sin City while his wife Jacquelina Jossa parties in Ibiza
Chit chat: The personal trainer, who showcased his muscular physique in a pair of black swim trunks, was seen chatting to a brunette reveller, who was clad in a black cutout swimsuit
Jacqueline and Dan appeared to be back on track as they headed out for a rare night without Ella, four, and 11-month-old Mia at the end of May, visiting London eatery STK.
However, she recently alluded to the problems she has faced in her marriage to the former TOWIE star by hitting 'like' on a telling Instagram post about cheating.
The actress 'liked' a video on the social media site which declared that 'there is never an excuse to cheat' and warned how infidelity can cause 'doubt in others'.
Splish, splash: Not short of female attention, Dan, who last visited Las Vegas a mere six weeks ago, happily spoke the