My husband took aphoto of a woman co worker.?

My husband is a 55 year old security guard at a job centre. I found a photo of a woman co worker on his phone. he says it was ok as shes a and I am making a fuss. He also has unknown number on his phone and when I question about this girl he turns it all around and attacks me and got nasty. He threatend to leave me and told me to sit down ***** . I told him that I wanted to go to the loo and he told me to piss myself. We spent the whole day rowing and he gave some excuse of him taking a picture because she was eating cake and she said she wanted to go loose wt. He said it was done in fun. The problem is I'm 66 and hes 55. there is no in our relationship. He goes to work smelling like a tart . She has told him that she has split from her girl friend and he came home with a Easter egg and a 1/4 bottle of rum. He says the girls in the office got him it ?? Am i making a fuss over this? He then told me he could't live like this and told me he should go.!!! I said to him if he went then i will thing that he is having a relationship with her. He then said yeah I am. He later said he said it because he was angry. She is 28. He has always lookes at other women but he thinks I dont see him. what do I do? My resting heart rate is up to 113 and this is making me ill.