Is there somethin fishy goin on???

So my sister n her fiancé thats shes been with for 7 years broke up n for a couple of days now they have been tryin to work on their relationship n before they started talkin he told her that somebody got his attention n thin ig made her think that he wasnt talkin to nobody n filled her head with bullshit that he loves her n all this n that well while hes sleepin n her bed at HER house she goes threw his phone n she finds messages under tha name my love sayin i love you back n forth n i mss you. So she screenshots me tha messages n i ask her does she know who she is to at least find out if it was a friend or not, n she tells me that her name is kathy n my bf ex gf name is kathy so i asked her if she knew her last name and she txted back n told me that she didnt know n all she knew was that she just got back from Florida n that she lives on hwy 24 with her dad n i had a feelin that it was her n iv had problems with her n tha past cause she tried to get back with my bf but anyways i woke up this mornin with a message tellin me that it is my bfs ex i am so furious rn n i told my bf n he said thats weird cause she never has dated a black person before ( n i ment nothin by thats at all ) so im sittin here thinkin well she knows who my sister is so shes got to be doin this to get back at my sister or shes tryin to get closer to my bf but idk i could be wrong so thats why i need yalls n put n opinions bout this n tell me what you think. Thank you 😊 ♥️