A and b are in a serious relationship have been for 4 years and have a small child together
C is A's ex they split up about 5 years ago
Recently a+c have been messaging a lot, nothing awful initially just catching up, but A has been lying about a few things basically bigging himself up in terms of his job and life ect messages contain lots of "xxxx" at the end of each message
B found out and is quite upset is yet to bring it up with a
B is a friend and I'm not actually sure if I think she is being unreasonable or not I can see why she's upset but there hasn't been any obvious flirting so I think she might be over reacting a little so who IBU