I'm trying to find an story I read once where a spaceship crashes on a farm. The alien is a cat-girl furry/type and is studying humanity. She ends up hooking up with the farmer and they both go into space. She introduces him to other species and even visit a primordial type earth where he father's a child with a primitive woman. There is a also a scene where he has sex with one of cat-girl's friends in zero-g.
They are disliked by someone (bounty hunter, maybe?) for their union and the cat-girl and the farmer get stranded on a planet for some years before they are rescued and the story ends with the cat-girl somehow getting pregnant against all odds.
The series is kind of long, if I remember correctly it has over 30 chapters.
Any help finding this would be greatly appreciated.