A source close to D'Agostino denied the claim, telling Daily Mail.com: 'That's not true.
The source added: 'That is not at all why the marriage ended. There was the kiss before the engagement party but that was it.' Luann, who announced her plan to file for divorce on social media today, is said to have been left 'devastated' and 'heartbroken' by D'Agostino Jr's infidelity.She has also told friends that she believes the New Yorker was using her for fame and was 'really loving the limelight'.'He cheated on her twice and she found out about it,' a close friend of the star told Daily 'It's just a matter of him not being able to be faithful.We care for each other very much, hope you respect our privacy during this sad time! Her co-star Ramona Singer was one of the first to comment on the split, responding to Luann's announcement on Twitter by writing: 'I am so sad for you ....' Tinsley Mortimer said her heart 'goes out' to de Lesseps 'during this difficult time' in a statement released exclusively to Daily on Thursday.'In life, some people think that it's holding on that makes one strong; however, sometimes it's letting go,' added Tinsley, who has been candid and open about her own divorce this season on Housewives.He has been a bachelor his entire life so it was really hard for him to conform to married life.'It's just crazy – he was never able to be faithful and that's the bottom line.'A second source confirmed: 'He did cheat on her twice.
He wasn't giving up his bachelor life which she really didn't sign up for.'A representative for de Lesseps has been approached by Daily for comment.
Jacques has been a wonderful part of her life." costar Kelly Bensimon also exclusively tells Us, "I love both Lu Ann and Jacques and feel for them during this difficult time." De Lesseps, 48, began dating the wine entrepreneur, 38, in 2010.
The couple began talking about the possibility of starting a family together during the fifth season of the , which aired in summer 2012.
Your support and encouragement helps me to get through [heart emoji].'She was also spotted for the first time since the news had been reported - no longer wearing her engagement and wedding rings.
Luann was seen on a solo outing in Sag Harbor, New York on Friday morning.
'The problem with telling a white lie is that you have to stick to your story,' she reasoned.