Most Helpful Guy
Probably not. I know I wouldn't like the idea of my girlfriend making out with another guy so it wouldn't be fair for me to make out with another girl. I wouldn't become an actor in the first place nor would I pursue a serious relationship with a girl who is an actress.
Also this may be an unpopular opinion but I do think the nature of their job plays a role how often their marriages/relationships fail. They are constantly traveling and spending large amount of time away from their SO while trying to build a connection and emulate passion with their attractive costars. I think it makes it very easy to develop feelings for other people and cheat on your spouse.