NO!!!!! People who are bf/gf, looking to get engaged, HAVE SEXUAL FEELINGS FOR EACH OTHER!!!! You might keep them under raps until you're ready for sex, but you want to touch, to kiss, to hug and much more. You can't keep your hands off each other. Moving in then, will be torture and you guys won't hold out.
IF YOU DON'T HAVE ANY SEXUAL FEELINGS FOR EACH OTHER, just be friends!!!! You won't have a great sexual relationship after you're married.