you crawl in bog / international title: Secret Affairs) is a 2010 Philippine television drama series broadcast by GMA Network.

Based on a 1990 Philippine film of the same title, the series is the nineteenth instalment of Sine Novela.

Directed by Maryo J. de los Reyes, it stars Dennis Trillo and Jennylyn Mercado.

It premiered on February 8, 2010, on the network's Dramarama sa Hapon line up.

[5] According to AGB Nielsen Philippines' Mega Manila household television ratings, the pilot episode of Gumapang Ka sa Lusak earned a 17.1% rating.