LIAM HEMSWORTH Pays Miley a House Call

Forget looking at photos trying to spot a ring or trying to decipher a cryptic tweet ... here's Liam Hemsworth spotted yesterday outside the Los Angeles home of his fiancée, Miley Cyrus.

Despite rumors of infidelity, hardly being seen together, and Miley's on-again/off-again engagement ring ... it seems this young couple is still going strong. 

For now. Next week ... who knows?