Why do boys love you but always plan to leave you eventually?
Girls are like crisps. Tasty, but one is never enough.
That doesn't mean you need to stuff your face with loads at the same time. But once you've tried one, you might want another.
The other thing about crisps is that there are so many different flavours. Personally, I'm a Cheese and Onion man. No danger. But if someone told me I could only eat Cheese and Onion for the rest of my days, without so much as looking at a cheeky Prawn Cocktail the wrong way, I'd be very upset.
I'm digressing a bit here. The point is, boys won't necessarily cheat on you - but most will plan on having several different girlfriends before they settle down with one.
You could call it greedy, or you could call it freedom of choice. It's unfortunate that some boys apply the same rules to crisps as they do to girls. But crisps really are brilliant, so don't take it too badly.
You've also made a massive assumption in your question - namely, that boys "always" plan to leave girls they love, which is nonsense.
If a lad is properly in love with a chick, leaving her will be the last thing on his mind.
So what have we learned today? That boys are often unfair but - when it comes to the crunch - many of them are lovely. And, above all, that I could murder a packet of Skips.
Please remember: Kev is not an expert, he is just a boy and sometimes quite a silly boy. The main thing to remember when it comes to lads and relationships is to expect respect as the absolute minimum. Find out more about a Women's Aid campaign of the same name.
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