Found texts between my(23m) gf(27f) and colleagues

Found these texts on my gfs phone in a gc between her and two work colleagues, one well call "jeff" and one well call "katie"

Jeff: I hope you know you guys are the best ever, both of you, love you guys

katie:love you so much jeffy💓

my gf:love you so much jeffy poo💓💓💓

jeff:love you so much (my gf)

jeff:I never tell you guys I love you but I do, im drunk rn, you guys make coming to work fun

my gf:me too im not drunk rn just a little fuzzy but I love seeing you guys at work too💓

What do I make of this? I know this is in a gc but are texts like this crossing the line?