My ex of 6 months just broke up with his new girlfriend and got kicked out of her house. He needed a place to stay so I said he could stay with me until he found somewhere else. He has now started dating other women. I feel that this is rude and disrespectful to me since he's living in my home and he knows that it is hurtful to me because I told him. He says that if I was really his friend I would want him to be happy and it wouldn't bother me that he was dating other women. I just want to know am I totally out of line here?