I saw a lady in my boyfriend's room while i was on the net chatting with him, do u think he's cheating on me?

Well i was chatting with him and had the camera on and all of a sudden i saw a lady getting in the room and opening his wardrobe to take something out...then Ooops he just switched off his camera saying to me that he can no longer see me, i doubt this...i think he closed my camera on his side so that the lady there cannot see me and he swiched his off so that i could not see the lady....then when i ask him what happened he said i dont know...his camera then came back on and i re-invite him on chat. He said something like 'its in your car' to the lady and then the lady went off. When i asked him about the lady; who she was...he said a cousin who came to stay over along with the husband and one baby as they didnt have anywhere to stay and that they were staying in a hotels for a month already and since he was alone; he told them to come over and stay at his place...what bothers me is that he didnt introduce her to me as he usually do 4 others nor did i see the husband there???