What do I do about this guy/pest continuing to try to talk to my girl?

Ok.. here goes. My girlfriend has had a "friend" way before I met her. He's been the "sweetest", "nicest", "caring" guy ever.. he's been there for her for a lot. But even when she was with her ex, he would call, text, and hang out with her. Which crossed the line with her ex and pretty much caused fights, and arguments between her and her ex. Her ex ended up threatening to him and he stopped for a while. Once she broke up with her ex, he confessed to her that he "loved" her and wanted a bit more with her. SHe let him know there was no chance of them being together but he stayed around, taking her places and buying her gifts all the time.

Then I came into the picture, at first it bugged me that he would invite her to go out places and visit her at work or school. I let her know how I felt and it was difficult but finally she understood that it was wrong for her to be hanging out with a guy that had other intentions with her. Finally around Christmas.. he ended up calling her and meeting up with her to give her a really expensive purse..as a gift.. which p*ssed me off! not only because he continued to cross the line,but I had also gotten her an expensive purse for Christmas so it was almost as though I was competing for my own gf. It took some time for me to get it through her head that what he was doing was disrespectful...

I didn't want to make her end her friendship with anyone..but the fact that he kept doing things like this, I just didn't see any other way...now a couple of months have passed by that he's contacted her...

and now my girlfriend told me that he has started texting her again.. and tried calling her..

what do I do..? My first instinct is to go where he works and beat him down with a bat.. but maybe there's other things I should try 1st..

=]
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She says, she has told him off and told him to stop.. but I have a feeling she hasn't really been clear enough with him..


Do I need to step in and do it for her? and If I do.. there's a good chance he'll end up in a hospital.. =/
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Well the thing is we've already had a big thing about this situation and she agreed it was wrong and disrespectful of him to continue to do things like that. She gave the purse back and told him that calling her and texting her is affecting our relationship
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I haven't heard anything about him in months.thinking he finally got the point. This week my girlfriend let me know about him calling her. She said she didn't answer the call, and has ignored him.. But it seems that he thinks he can still check her
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OK. Half the girls understood what I'm talking about. My girlfriend and I have resolved the fact that the gifts,hanging out, and talking to this guy was wrong and she did cut him off and stopped talking to him.
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It's been months since he's tried talking to her. But she just let me know a couple days ago that she had a missed call from him. She just wanted to let me know, because she said she doesn't want me to feel like she's hiding anything or still talking 2him
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She has ignored his calls, and she has told him to back off and stop doing things like that. What I'm saying is maybe he doesn't get the point from her. So maybe I have to stop him. It's not that I feel she'll like him, it's that he continues to try
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So that whole attention thing, and us fight over her is not the case. IT's a guy that keeps trying to talk to my girl and doesn't stop when she has told him too.
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the whole gift thing was a while back and we resolved that. And she agreed talking or hanging out with him would be wrong because he has feelings. SO it's not that I feel my girlfriend is still doing that,
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I THINK ONLY GUYS HAVE UNDERSTOOD ME SO FAR..LOL
What do I do about this guy/pest continuing to try to talk to my girl?
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