I work in an office with mostly men and have become really friendly with one guy in particular.
We just hit it off straight away and share loads of interests. We have a laugh too as our sense of humour is very similar. We even wear our hair the same way.

Although my girlfriends never met him she's always niggling at me with jealous comments. She's even threatened to come round to the office and 'jimmy 'ead butt the cunt'.

What can I do?

Answer:

Hmmm this is one of the more interesting questions we've received, thanks. From reading your question i can immediately identify that there are some 'trust issues' at play here. Have you tried talking to your partner? Let her know how important she is to you, communication is key to success in any trusting relationship... then she is way more likely to turn a blind eye to your blatant homosexual tendancies and you'll be blowing that guy before you can say 'Appletini's after work mate?