Gemma Collins is reportedly 'triggered' by seeing photos of her ex James Argent, 34, kissing his new girlfriend, 18.
The former TOWIE star is currently engaged to Rami Hawash but used to be in a relationship with Arg.
A source told Closer that Gemma has told friends she is 'jealous' but doesn't want it to be a competition.
The source said: "Gemma's admitted to friends that she felt jealous, and while she doesn't want it to be a competition, she has said she'll be furious if Arg ends up tying the knot with Stella before she and Rami do."
They went on to say that her friends are worried that this could be a 'sign she's not fully over Arg'.
READ MORE: James Argent, 34, kisses teenage actress in Marbella - confirming new romance
However, it's thought that Gemma thought she was 'fully over him' but has found the kissing pictures 'triggering'.
The source added: "On one hand, it brought back all the awful memories, and how he left her feeling worthless and used, while on the other, it made her angry to suddenly think that Arg and his new girlfriend might even beat her and Rami down the aisle."
This comes after Gemma appeared on The Big Breakfast where she opened up about her upcoming wedding.
She was speaking to Judi Love when she shared some exclusive wedding plans.
The 41-year-old had just returned from Mykonos before going on the show, where she said will be where she will tie the knot with Rami.
Revealing that she came 'straight off the plane' to the studio, Judi asked Gemma if she managed to find her dream venue.
Gemma replied: "I finally found the venue, I'm really excited.
"It's going to be magical, it's going to be everything everyone is going to expect basically."
Judi then went on to compare Gemma's nuptials to Ben Affleck and Jennifer Lopez' recently wedding celebrations.
Judi said: "Are you and Rami, are you going to have a bit of the whole Jennifer and Ben kind of thing?"
Gemma said: "Do you know what? Every time I see Jen and Ben, I'm like 'that is me and Rami all over' do you know what I mean? So I'm going to ring J.Lo and see if she'll lend me one of her outfits for the wedding maybe, for the evening.
"J.Lo I'm going to be putting in a call honey."
Despite getting excited about her big day while on the show, Gemma wasn't wearing her engagement ring.
She said that due to being on a plane soon before, her fingers had swollen so she couldn't get the ring on.
However, she then revealed that the ring is currently getting upgraded.
Gemma is yet to reveal a date as to when Rami and her will be getting married on the Greek island.
