While people here can be very wise, and have lots of experience to share, this is something only someone who knows you can help you with. We don’t know what you discussed already, or what issues are important to you. You have to feel comfortable that this is a decision that works for you, that this is the right person for you. If you have doubts, reasons to believe there is something serious being hidden from you, or things that need to be clarified before you get engaged, then now is the time to speak to a rav, mentor, parent, even the shadchan.