My husband lied to me about his female coworkers!

So my husband has this cowoker an i guess they have developed a friendship. So we were arguing and it got really ugly. He tried throwing her in my face saying at least she has time for me. Then i over hearing he telling his friend that it feels good having a girl as a friend thats not drama. I come to find out they csll and text each other and he say it work related sll the time. Please help should i be worried.