Rape threat

Over the summer I was dating a guy I was working with who is from a different country. I had to quit when school started, but he is still working until November. His job requires him to move to a different state every few weeks. I have not seen him in a month, but I really want to go see him to say goodbye. Since he is not from this country, he does not have a cell phone or a way to get in touch with me; however, his roommate has a cell and I talk to him every once in a while. My significant other is not allowed to date me because of his job and therefore his roommate doesn't know were involved. His roommate is also kind of a creep and I don't trust him. The other night I txted his roommate to see where they would be on a certain weekend, and he was drunk. He told me where they were going to be but continued txting me with very provocative txt messages and implied that he wanted to have sex with me. I told him he needed to stop it and when the messages continued, I threatened him by saying my guy friends in that area will kick his a** if he comes in my personal space. He then was like oh you know I'm just kidding. I don't think he would act on it, but if I go visit my significant other, I risk dealing with him. I have no way of telling my significant other what happened either becuase I have no way of getting in touch with him now. If I go, I can't bring a friend because it's a long drive and it makes them an awkward third wheel. What do I do?

You said he was drunk. Maybe he doesn't even remember doing it. He was definatly in the wrong, however he didn't threaten to rape you from what you wrote, he just said that he wanted to have sex with you. That's too totally different things.
I say go up there, you will have your significant other there with you and you can tell him about it when you get there.