Tony :
His : Genius, dear , and honey but its Anthony Edward Stark if you are angry at him
Yours: Sweet Cheeks (he is a flirt ),baby girl, gorgeous, and kitten
Bruce:
His: Brucie , my scientist , love
Yours : Cutie , Lil Stark, my love, or sunshine ( only in private)Steve:
His : Cap , my Soldier , honeybear(only in private so no body hears it ) , or Steven Grant Rogers when he does something stupidYours: Miss America , darling (he's from the 40s ) , baby Barnes , wifey, or dear.
Bucky :
His: Sweetheart, Dream Boat , LoverBoy , Mi Amor , Handsome, sergeant, Stud , Stud Muffin ( Oh Bucky you little Stud Muffin you) and James Buchanan Barnes when you are angry at him.Yours: Doll, Angel , Baby doll , sweetie, my everything, little Rogers (just to annoy you) , Cutie pie, Sugar , Sweet Pea , and Sugar Plum ( he likes plums )