just the fact that both dean and cas were perfectly content to live a sex-free romance-free life in a monogamous platonic partnership with one another cause they thought the other couldnt reciprocate in the same way. like not even in a ‘ill take what i can get’ way but in a ‘im truly blessed to share this with you’ way. that is truly a wee bit of unconditional love for love’s sake with no expectation of anything in return innit