
Not too late at all, you should only do it when you really want to, feel safe and comfortable to, and think it's the right time, and it's also okay if that time is unclear to you right now or never. If he's a good person, he'll always respect your boundaries and value having your consent. If he gets upset or lashes out, that'd prove he is a rapist or has a rapist like mentality and you should stay far away from him