Looking for a story

I'm looking for a story that I read on here some time ago but I never thought to book market.

The story begins as always with a young boy who happens to be the town Tara who lives with his grandparents that just doesn't care. The Grandparents win in a vacation somewhere and leaves him with the next door neighbour and their daughter. Down to the fact of their daughter leaves her underwear in her dressing jacket and he has none decides to put it on and find that out who he really is.

Thank you in advance for helping me to find this story again I think I came across it by looking at one of these posts.