I am so confused, not sure what hand I am playing

[Snow White]

Well today has been another enlightening day. I went to get groceries to make chilli and I noticed as I was pulling out of the driveway my H sprung from the chair he had been glued to. So on the way back I came from the other side and he was in the driveway texting on yet another phone. I asked him about it ands he said it was one from work. I asked why he was testing her and he said she had sent him one to say her daughter had pink eye and would he change shifts. So I asked to see the phone and he wouldn't let me. I demanded and no, I said why if that is all it is. He gave the I should trust him line. SO I decided to hell with it I am going to talk to this woman. So I drove to her house and was at least 20 minutes until she answered the door. I left a number of messages and I am not sure whether or not the last one got through to her or she finally got tired of me ringing the bell. She called back on my cell and I told her to let me in, she didn;t want to since her daughter was there, I convinced her I was a nice rational person and I just wanted to talk. So she let me in, she was kind of shaken up that I was there but we sat and talked, probably for close to 2 hours. She seemed very sincere, and was actually quite nice and I was very blunt with her about a number of things and my opinions of her prior to meeting her. She actually confirmed exactly what my husband had said, one time, before work, calls were almost all about checking up on her. She is a very big girl and when I asked her about the sex she said that she had initiated it, that she was flattered that someone was taking an interest in her and that her boyfriend had not had sex with her other than when her daughter was born for 4 years. She actually said that maybe my husband felt ba for her and it was pity sex. I really don;t think this is the case but I think that she isn't so sure. She actually said, look at you and look at me. I said it isn't all about looks. When I finally came home my husband was angry that I felt the need to do that. I told him I don;t get how I am supposed to let everything he did go but he is allowed to be angry at how I deal with it. I was kind to her, and she actually told me that she thinks I am amazing and that we could have been friends. My husband went down to his parents house to take a shower(they are in florida) he said we will talk when e gets back. I packed his bags. I think he needs to see what he can lose because I am sick of him using my DB as a way to get everything he wants.