Stefan Golaszewski’s a sickeningly talented young man. Squished into a sweaty attic in the Pleasance and armed with nothing more than a handful of props and some banging techo music, the young London lad is bowling over audiences with his first solo show, a smart, sharp, funny, charming and ultimately very affecting autobiographical monologue about falling in love and having his heart broken. And what makes this show really special is the wildly imaginative writing that absolutely nails all the eagerness and awkwardness of youth.

Golaszewski’s account of a brief encounter that blew his mind and changed his life takes place over two nights back in 1999, when he was 18 years old. A chance meeting with a girl in a pub in Walthamstow, and a date at the dogs the next night, puts the cocky youngster through an emotional rollercoaster that takes him to extremes of feeling, the like of which he’s never come close to experiencing before. Or, to paraphrase Golaszewski’s gloriously wonky expressive style, having met the girl of his dreams he feels like the first man to ever put on a pair of glasses.

It’s writing like this, all unlikely and inappropriate metaphors and similes, that marks out the show. It’s naked and a bit naff, but it’s also bold and original and it rings true. (If you’re looking for a comparison, Enda Walsh’s celebrated 1997 debut Disco Pigs comes to mind). Combine that with a beautifully modulated performance that’s by turns frantic and tranquil (in all the right places) and you’ve got arguably one of the most assured and exciting Edinburgh debuts of 2008.

Having appeared with the comedy troupe Cowards in 2005, this is not technically the first time Golazsewski has appeared at the Fringe. And, on evidence of this winning show, it won’t be the last.

Pleasance Courtyard, 556 6550, until 25 Aug, 3.15pm, £8.50–£9.50 (£7–£8).