All he needs to do is to jerk off in a 10 cc syringe and have her inject straight into her vagina. The estranged couple can do that many times until she is pregnant. But because it is a drama, the story should be dramatized. And drama it is indeed.
In real marital situation, the well-meant couple must always distinguish what acts could spawn jealousy. Any action that can compromise the relationship must be avoided, things such as extended talking to an ex, constant re connection, going out together even for once and recollecting the past, or even just keeping mementos and photographs. Hey, drinking alcohol can blur all the lines for sure. Cut and cut cleanly to be crystal clear.
