He enters your living room without hesitation because he knows he’s always welcome there. You can never completely get angry with him because you’ll forgive him anyway (why expend the energy on that?) There’s no real pressure to look good for him, or to domesticate yourself, because hell, he probably cooks better than you do. you don’t get disappointed when he doesn’t open the door for you, or perform any of the perfunctory genteel mannerisms frequently assigned to a “gentleman” (ergo, a prospect). if he sees you as a buddy, then you really don’t quite see him as a “man”… much more the “gentle” kind.