For the past few years my boyfriend has always told me that his values and principles were the same as mine in that he was a strictly monogamous person. Now he admits that he would be willing to sleep with other people while in a relationship if he was dating someone else but since he loves me and is in a relationship with me and it's our agreement he would never hurt me and do that. He's also a sex addict so he says out of respect for me he doesn't cheat even though most people would. He also admitted that he's now into transsexuals but "only in porn". I can't help but worry about this even though it doesn't apply to me right now. How do I know if he will change his mind later or come out with more things we're not on the same page about? I don't know if I'm just overreacting.