My wife's younger sister has a new boyfriend. He recently spent some time with the family and having got to know him, he's a bit of a dick. He's in his early 20s and he's quite arrogant. I get on with most people but he's one I just don't 'click' with.

Anyway, my wife today asked me what I thought of him, to which I replied 'I think he's a bit of a dick'. Which started WW3, as she proceeded to tell me that she can't understand why I don't like him, it must be jealousy, either I'm scared of him taking my place in the family or BECAUSE I HAVE A CRUSH ON HER SISTER. What. The. Actual. Fuck.

She went on to say how I'm like this with all of her sisters' (she has 2) boyfriends, and that it must be jealousy. This statement is bullshit by the way, but there have been 1 or 2 others I haven't got on with either.

She's insecure about this particular sister as she's quite a bit younger and no kids yet (we've got 3). And we've always got on really well. Have suspected that she had a crush on me for quite a few years, for reasons I won't delve into now, but it is 100% not reciprocated - I've known her since she was 7 yrs old & don't look at her that way at all.

We were interrupted in our conversation today so I just said 'we'll talk about this later'. Well now is later, and I have no clue how to react to this - any help greatly appreciated.

Thanks!