I know Skyrim has a ragdoll type of Mod that mXr featured, Lover's embrace or some such. I was so hopeful when Bethesda announced romance-able companions that they would go the extra little bit and allow those nuanced expressions of romance like a kiss, hug, etc. I swear when Piper gets into trouble during a fire fight and she's calling my name out it makes me want to run over, jab her with a stimpak, then hug her and tell her it will be okay. If noone else does it I may try my hand at it when the Geck comes out. I have never built a mod before but it may be a good first try if no other better modder than I gives it a go first.