The title says it all. She just told me today, and it happened last night. The dude is a coworker of her's, and when they closed up shop, he asked her if she wanted to hang out. Now, she's told me this guy has weirded her out a bit at work before, so I'm still not sure why she agreed to go hang out at his house in the first place, but that's what happened.
He took her to his room supposedly to show her his computer (she's a bit of a tech geek like myself). I guess at one point, he looked...pensive. She asked what he was thinking about. He says, "Close your eyes." Not sure what was going on, she did so. That's when he leans in and kisses her.
She immediately pulled away and asked him what the hell he thought he was doing. He basically professes his feelings for her right then and there. He wants her to flat out tell him if she's not attracted or interested. She tells him...she's not attracted, interested OR available. He says he doesn't care that she's not available, because he goes after the things he wants, or some bullshit like that. She again says no, she doesn't want anything like that. He then tells her he either wants to be with her, or nothing at all. If she won't be his girlfriend he doesn't want her as a friend...
So she said, "Okay...bye."
Sadly, that's not the end of him. She is his coworker. At the store she just got transferred to. Her transfer to this store basically saved her job. Had she stayed at her previous location, she would have been fired due to her poor sales numbers. This new store has much better clientele and more traffic, so she can make a lot more money. Unfortunately, she'll be working with this piece of shit. She can't exactly complain because this happened off of company time and property, and he's always a model employee at work. He also text messaged her today saying he changed his mind, and will still be her friend. Oh, thank God...
He also accused her of leading him on by simply "being sexy." 
So now I have the dilemma as the boyfriend of what to do. Part of me wants to simply end this guy. While I don't see my girlfriend as property, you simply do not make a move on another guy's girl. And when you do, you should face some sort of consequences. I just don't know what to do, but feel I should do something. If I do nothing, he'll assume she didn't tell me, or that I'm too weak to confront him. If I do confront him and end up kicking his ass, we've got legal and criminal issues to deal with. There's got to be something in between, and I'm not in a state of mind to figure it out. I'm pissed at this guy, and a little mad at her for putting herself in that situation...but mostly just pissed at him.
Anyway, any sage advice from you guys would be greatly appreciated.
He took her to his room supposedly to show her his computer (she's a bit of a tech geek like myself). I guess at one point, he looked...pensive. She asked what he was thinking about. He says, "Close your eyes." Not sure what was going on, she did so. That's when he leans in and kisses her.
She immediately pulled away and asked him what the hell he thought he was doing. He basically professes his feelings for her right then and there. He wants her to flat out tell him if she's not attracted or interested. She tells him...she's not attracted, interested OR available. He says he doesn't care that she's not available, because he goes after the things he wants, or some bullshit like that. She again says no, she doesn't want anything like that. He then tells her he either wants to be with her, or nothing at all. If she won't be his girlfriend he doesn't want her as a friend...
So she said, "Okay...bye."
Sadly, that's not the end of him. She is his coworker. At the store she just got transferred to. Her transfer to this store basically saved her job. Had she stayed at her previous location, she would have been fired due to her poor sales numbers. This new store has much better clientele and more traffic, so she can make a lot more money. Unfortunately, she'll be working with this piece of shit. She can't exactly complain because this happened off of company time and property, and he's always a model employee at work. He also text messaged her today saying he changed his mind, and will still be her friend. Oh, thank God...


So now I have the dilemma as the boyfriend of what to do. Part of me wants to simply end this guy. While I don't see my girlfriend as property, you simply do not make a move on another guy's girl. And when you do, you should face some sort of consequences. I just don't know what to do, but feel I should do something. If I do nothing, he'll assume she didn't tell me, or that I'm too weak to confront him. If I do confront him and end up kicking his ass, we've got legal and criminal issues to deal with. There's got to be something in between, and I'm not in a state of mind to figure it out. I'm pissed at this guy, and a little mad at her for putting herself in that situation...but mostly just pissed at him.
Anyway, any sage advice from you guys would be greatly appreciated.