The shoulder slump does indicate attraction but, even better, with a serious emotional undercurrent.
So in the case of a long-term lover, his shoulder roll is likely a sign that one of your quirks has tugged on his heartstrings.
The head tilt is a subconscious come-hither signal to any femme the guy has feelings for.
So if that man you've been making eyes with for the last hour gives you the head tilt, that's your cue to go in for the kill and introduce yourself or even send him a drink.
"He's letting his guard down and comfortable expressing his emotions, which a man usually does when he's thinking long-term," says relationship expert Jeffrey Bernstein, Ph D, coauthor of When a man finds a woman's actions to be adorable or sweet, he gets the urge to hold her.