Yeah it's her Ex-boyfriend named
James/Jake Sentry

Name: James/Jake Sentry
Age: (idk I think it's like Flash)
Crush: Unknown
Gender: Male
Type: Human
Dislikes: Sunny(in Rainbow Rocks cause he is under the spell), Frosty(in equestria girls), Bullies
Likes: Frosty, Friends, Family, Rocking, Singing, Rapping, and etc.

That picture is camp everfree