IMHO, you have a lot of soul searching and growing up to do before you can figure out what it means to be in a relationship. There's no such thing as a dating "safety net". You just can't do that because that means you aren't being 100 honest and faithful to your SO. It means you don't trust him 100% and the relationship won't ever go anywhere that way. No wonder you've been unfaithful.

I'd seek therapy for why you feel compelled to always be unfaithful and keep these alleged "safety nets" in your life.