Could I create a marriage, or relationship(boyfriend/girlfriend, fiance/fiancee) contract that prevents cheating? Explanation below.?

Could I create a marriage(husband/wife, prospective husband/wife), or relationship (boyfriend/girlfriend, fiance/fiancee) contract that prevents cheating? Meaning if the girlfriend cheats on her boyfriend, the boyfriend could sue his ex-girlfriend for money, for not being faithful and all. It's called emotional baggage and all, or something similar. Unless you want the ex-boyfriend to committ murder and all. The husband-wife stipulation would be more extreme, either move out of the country and renounce whatever country you are from and make sure the wife doesn't escape so to speak. This is the only way I will ever start a relationship, the ones who don't agree aren't worth my time, so you do know people can adopt and yes singles can adopt as well, as long as they are 'Financially Stable' and all. So Having a family wouldn't be a problem. So there. This is the only way I will ever have a relationship no, ifs ands or buts about it.