Liam Hemsworth is boo-less in Malibu ... but he's still having a helluva time being single, ripping waves on his surfboard with older brother Luke.
Liam and Luke took full advantage of a nice swell Thursday in the 'Bu, paddling out to catch some waves and get away from all the drama back on dry land.
The youngest Hemsworth bro looked happy and at ease in the water, hanging ten before showing off his toned bod as he got out of his wetsuit.
As you know ... Liam's single for the first time in over a decade after filing for divorce from Miley Cyrus.