A Friend at work told me he fancies my girlfriend who I have been seeing for about two months and keeps giving her looks. We are crazy in love but he keeps secretly asking her to go places with me and called her beautiful once. Its really winding me up. I have told her how I feel and she says there is nothing to worry about and she will never leave me etc but he is cracking me up. He's always trying to make her laugh to and trying to tease her. Any advice please?

Let him make an a$$ of himself. Why not, or are you worried that he is competition, and she will be swayed by his attention?

Trust her to handle her business, and don't let him wind you up.

"A Friend at work told me he fancies my girlfriend"
I would nip that crap immediately. The source.

Hes not your friend & I would tell him to screw off.

Your girl already told you, not to worry. So, believe her.

I would just make sure that this doesn't happen again.
If he's the prob, then fix it. Between you & him.

Whip that guy