Hubby Snapchats co worker a lot ?

Hello ladies ... so long story short recently I found out my husband Snapchats another girl from work he didn't told me anything abt her till I found out he said there was nothing to tell me about before she came to the picture he would talk to me about other ladies co worker I guess what really bothers me is that he hid from me .... he did admitted snap chatting her but said that she's just a friend that's it ... well I saw his snap chat and turns out they've been going back and forth with each other for quite a while she even posted a picture of my hubby on her story today he doesn't know that I know all of this ... I kind of told him that I felt that there were too close he again she's just a fiend from from work her talks too that's it.. how's would YOU feel if your SO does this ??? And according to him she lives with her bf ... ugh I hate this feeling

Hope I made sense ladies