Gavin appeared in a Skype advert around 8 years ago with his grandfather, Guilio Free. Showing how Gavin and his grandfather communicate when they live far away from each other. The video can be found here: https://www.youtube.com/watch?v=miiK9vVpxP8
Gavin is currently dating Meg Turney, of SourceFed fame. Gavin keeps his relationship life hidden, possibly to prevent some Rooster Teeth fans from invading their privacy. Michael Jones instigated the relationship in September 2013 on Twitter, commenting on the whole "Will they? Won't they?" aspect of them getting together, since then it has been confirmed by both parties on Twitter.