in " sex at dawn , " which uses evidence of our natural inclinations .
abc has called the split a “ casting change .
salon spoke to ryan over the phone from barcelona about the problem with american marriages , why gay men understand relationships better than straight men , and the hidden meaning of human testicle size .
but ryan and jethá also have a theory for what 's causing this misery : from a biological perspective , men and women simply are n't meant to be in lifelong monogamous unions .
marriage in the west is n’t doing very well because it ’s in direct confrontation with the evolved reality of our species .
you paint a bleak picture of the state of marriage in the west , particularly in the united states .
pacific coast news call neal mcdonough the anti - tiger : the tv actor recently gave up his part on the new abc show scoundrels just three days into filming , because the script called for him to be in a sex scene -- something the married catholic father - of - three has made clear he wo n't do , radaronline.com has learned .
photos : celebrity cheaters the scoundrels script called for him to be in a sex scene with sultry actress virginia madsen , and leaving the show might have cost himself up to a cool $ 1 million .
mcdonough -- a talented 44 - year - old actor who has appeared in projects like band of brothers , desperate housewives , boomtown and medical investigation -- has steadfastly refused to do sex scenes of any kind throughout his career .