Matt smith real reason for leaving (nsfw)

[Starkers]

And it wouldn't exactly be the first time... Tom and Llalla, Tennant and Sophia Myles, and I believe DT had a relationship with a member of the production staff as well for a time (willing to be corrected on that) and of course he met his wife via the show

And these are just the ones we know about.

 

[Turtletrekker]

Yeah, by the standards of the entertainment industry, this is extremely tame stuff.

 

[Awesome Possum]

It's innocent and charming by the usual standards.