<human>: Can you condense the text into three sentences or less?

Throwaway because SO knows my username.

My SO and I have been together for six months, and he and I are doing well, except he is a gamer who won't quit saying rape. We are in a LDR, and only see each other once a month or so, and consequently, we use Skype almost daily. I've been introduced via Skype to the people that he games with, and although I don't game very often, I am usually on Skype with them while they do.

His friends use the term rape quite often, and so does my SO. Now, he knows that this word bothers me, as I was raped about a year ago by a 'friend'. I have asked my SO to quit using that word a number of times, and he always apologizes and promises that it won't happen again. Yet here it is, time and time again, that he uses that term. He's even tried to rationalize using it by saying that it doesn't mean the same thing as the literal act of raping someone, and that he would never do it, etc. I've even told him that if he wants to use it while I'm not there, fine, but when I'm in the conversation, don't use it. However, he cannot seem to do this, except when he and I are alone. 

I'm tired of the constant memories this word brings up for me, and I feel like he's being disrespectful, but don't know how to make him see it from my point of view. I've told him it's disrespectful, and he promises to do better, but how long do I need to wait to see improvements from him? This is not a new development, he's known this word has bothered me from the start of our relationship. We've had several talks about this. I really do care for him, and I believe he cares for me. 

How can I make him see where I'm coming from/how do I proceed?
<bot>: SO won't quit saying the word rape, knows that it bothers me, continues to use it with his friends while I'm present.