Well that probably has to do with the reduction of Lucy Brown.
It just got weird after Abbey gave in and started reciprocating Connors loving feelings.
They always say "I wouldn't shag you if you were the last man on earth!" but no one thinks that with a time travel accident that a girls options can be just as restricted 60 million years in the past when she's alone on the planet with the first man on earth
Half Chipmunk, but Connor mostly qualifies as a human being.