Cas finally juet goes for it and kisses Dean after one of Dean's infinite I'm Not Giving Up On You Ever speeches and Dean immediately starts crying, like heavy, can't breathe snotty type crying, so Cas backs off but Dean clings to his wrists like 'No, no, no, please, please' and kisses him back. When Cas next manages to tear himself away he goes 'I don't want to upset you'
'I'm not upset, I'm just...I never thought...' (tears overwhelm him again. Cas shushes him and hugs him close and kisses his forehead) 'I love you, man.'
'I love you too'
'Oh yeah? Well how come you're not crying about it then?'
'I could cry'
(Dean, his voice still wobbly with crying)'Prove it'
(Cas, who's been hanging on by a thread since Dean said I love you, his voice breaking) 'I love you' (tears spill over)
'That's- hic -that's more like it'
And they make out sloppy style while they both openly weep with joy and relief.
Sam sees Dean shuffling into the kitchen later with puffy red eyes and a washed out face AND a huge collection of hickies all around his jaw.
'What the hell happened to you????'
'Heh. You should see the other guy.'
Cue Cas coming in looking equally wrecked and dazed-from-crying, slinging an arm around Dean's waist and pressing a kiss into his hair.
