Guy ‘falling asleep’ next to me?

Whenever my boyfriend and i are cuddling and watching a film with no intentions other than kissing he always seems to be falling asleep, usually even if it’s mid day and the films aren’t boring and we aren’t laying down simply on the couch he doesn’t fully close his eyes but just slightly it’s just strange and wondering why. Also he likes to randomly tense his other arm i don’t realky notice but occasionally i heard that guys do this to suppress unwanted hards is this the case or something different?

Guy ‘falling asleep’ next to me?
Post Opinion