Hey ppl waz rappenin?

I am seeing a girl that I work with for about 6 months now. Around a year ago she was seeing another work mate for a short period b4 me but, she never took that guy very seriously.

We are still colleagues and friends, but the strange thing is ever since me and her hooked up the other guy( Dopey D) has been acting a little strange.

Dopey D try's hard to get her attention by ringing her when shes at work, but then talks about nothing or makes out like he accidentally called her? We work shifts and if she starts after his shift he usually leaves all this work for her to finish or does a half ass job for her to fix anyway.

Recently a female family friend of Dopey D is visiting him from overseas. He told my gf a while back that this other Girl is interested in him or whatever.

My gf complains to me about Dopey D calling her. She said she tells him she's busy and doesn't really get into conversation with him.

The other day my gf was showing me funny msg threads in her phone from assorted friends. She also showed me a recent msg from Dopey D. I looked at the msg it was something about him complaining about the visiting girl that he is hanging out with. Gf and I were in a happy mood so using her phone I wrote "Don't worry I'll find you a nice guy". I asked her if she wants me to send it and she said "send it!".

After the msg was sent Dopey D immediately replied with a "Fine... fuck off!!" msg. I wrote back that it was me and told him she's busy and she will get back to him. He replied with " very rude, very rude indeed" which seemed like he didn't take it too personal at the time. She later replied with an apology and gave him a short answer to his original question. That was the last time Dopey D msgd my gf.

The following day GF and Dopey D worked together. Dopey D appeared very upset over the msg thing and started aggressively bitching about me to my GF in front of the other work mates with stories, insults and even threats directed towards me. Gf told me the other colleagues were a little disgusted by his behavior.

Question

How should I handle this guy? I'm thinking that I should just ignore him talking behind my back, but if he says something to my face then I'll alpha him verbally?
Is that making me look weak?

I told gf to ignore him until he apologizes to her? Is that making me look insecure?

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you can fake it till you make it, but if it feels REAL go with the flow!

no it doesn't make you insecure..

he is just being a dick over a small problem, just don't give a fuck.

when your girlfriend asks about it just reply '' yeah well everyone needs to grow up some time, especially him''

just be cool and act like nothing has happened like u don't give a shit.
when he's talking to you with you present or in your face just try to win verbally and ignore.

If he does confront you, don't respond at his level. Don't respond with emotion either. It's all water off a ducks back. Always respond with deeper, more fundamental, conversation ending things, that are really questions about why they feel they need to say what they're saying. Don't do things like give tit for tat, justify anything you've done unless it's short and simple fundamental justifications like, "She's my girlfriend."

Thanks guys I saw Dopey D and did just that. Dopey D looked really uncomfortable and nervous around me the last time I saw him.

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you can fake it till you make it, but if it feels REAL go with the flow!