is husband cheating ?

everytime i go to bed early

hubby goes to his man cave instead of sitting in the living room

i always check the living room while he doesn't know to see what he is doing

but he is always at the man cave if i go to bed before him

today i made an excuse that i'm gonna do my face routine then go to bed

he said ok while watching a soccer game

i put a mask on

went to the living room

didn't find him but television was on

i called him

he answered saying he is at the man cave

which is downstairs so i just went to bed

with the new phone update ( the one were calls are like a banner on the top)

if i call him while he is on another phone

will " the person is on another call appear " or will it just ring ?