Nadine Coyle and Jesse Metcalfe are definitely back together, according to her Girls Aloud bandmate Nicola Roberts.The singer has revealed Nadine is giving the 'Desperate Housewives' hunk another chance after his visit to rehab, and is ready to forget about the cheating allegations that ended their relationship earlier this year.Nicola told Closer magazine: "They are together and seeing how it goes. It could work out, it could not."The redheaded star has also revealed she and the rest of the girls hated wearing PVC suits in the video for their new single 'Sexy! No, No, No'.She said: "We did not enjoy it at all. We had to lube our entire bodies from head to toe before slipping them on!"Nicola recently admitted she would never turn to her bandmates for love advice.The 21-year-old singer - who is rumoured to be engaged to boyfriend Carl Davies - is a private person when it comes to matters of the heart.She said: "I would never discuss my love life with the rest of the band.Cheryl Cole and I are pretty close so I probably would confide in her. But the thing is, it's not just you in the relationship, there's the man too. I wouldn't go off and talk about out business to everyone. It's a private thing between you and your man."