Ever wished you knew what makes a guy weak at the knees? Or what makes his head turn so fast he nearly falls over? Of course you have! So we asked five to-die-for guys to spill the secret on what flicks their switch...

*Warning: These tips may cause lads to become seriously helpless with desire. Enact with care.

"The way some girls walk is amazing. If they strut past me with their head held high and their hips swinging from side to side I'm a goner. Another thing that makes me sit up and take notice is when they play with their hair. It's so cute to see a girl absent-mindedly curling her hair around her finger."
James, 15, Bishan

"I love girls who are up for a laugh, whether it's joining in a game of football or diving into a swimming pool with all of her clothes on. Tomboys are great - I fancy girls who don't care about make-up or doing their nails. If they can tell a naughty joke as well, that's a sure-fire winner with me."
Casey, 16, Joo Chiat

"Girls who play hard to get are the best. If I text her and she texts back straightaway, I'm not too keen. I'd rather she waited a few hours as it makes me wonder 'will she reply or won't she?' Then when she does I get a real rush. I don't want her to be frosty with me or anything, but I love the thrill of the chase."
Ben, 13, Bedok North

"The ultimate headturner for me is a girl who is always smiling. It doesn't matter if she has braces or something, a smile lights up her face and makes her look far more approachable. My last girlfriend had this cute, cheeky smile. When we were in class she used to sneak looks over her shoulder to me and give me 'that' grin. It made me melt and I couldn't wait to see her after school."
Peter, 15, Ang Mo Kio

"Girls who dress in an individual way are wicked. Most teenage girls look like clones because they all shop in the same places, so if she's wearing a vintage dress that she got from a second-hand store or a kooky hat, it really makes me look twice. It shows she has bags of personality and isn't afraid to stand out from the crowd."
Jason, 17, Sembawang