Honestly... I don't know what's going on in your boyfriend's mind. But this all strikes me as being a proverbial "slippery slope". For one thing I think what your bf is doing could easily be viewed as being a string of emotional affairs of sorts. And, beyond that, there is evidence that frequent viewing of internet porn can-&-does impact a person's ability to engage in real-life sexuality. My personal, non-professional opinion is your bf needs therapy to help him sort out what's going on with him that makes him want to do all of this. But if he refuses, I would encourage you to think carefully before you become any further attached to him than you already are.

Here are links to 4 articles, from PC's archives, on the subject of the dangers of internet porn:

How Pornography Can Hurt Your Sex Life

Does Watching Porn Affect Intimate Relationships? (Part One: Men)

How Much Porn is Too Much Porn?

Legal Traps for Internet Porn Users: 5 Ways You Can Get in Trouble

My best wishes to you...