Is he Bi or Gay? Just get that feel somtimes

There's plenty of info right at your fingertips.
http://www.huffingtonpost.com/news/seth%20macfarlane%20dating
http://www.whosdatedwho.com/dating/seth-macfarlane
http://www.famousfix.com/topic/seth-macfarlane/dating
http://www.zimbio.com/Seth+MacFarlane's+Impressive+Roster+of+Ex-Girlfriends
http://www.inquisitr.com/2964612/emilia-clarke-gets-candid-about-dating-seth-macfarlane

Being that rich and good looking hes getting to band all the pretty, famous people who arnt as rich

He's way too clean, neat & tidy, flamboyant and into musicals to be hardcore straight.