Am I the only one who finds the idea of cuckolding while the girl is pregnat even more exciting than it normally is? I mean, when a girl is pregnant the couple should be more bond than even. To intervene in such a context is such an arousing thought to me. Not to mention the fact that when you come inside of her your sperm lands on impregnated wombs, which is so hot...at least in my humble opinion...
If you like this subject, I leave you with a link (i hope not to break some forum rules posting it. If so, I'm sorry)