Red Flags-a Partial List....Are you sexually fulfilled with this person?
...When massively in love, the thing you need to think clearly about is your partner's flaws...can you live with them?
...Does your prospective spouse listen to you and change behavior, especially when you tell them their behavior isn't ok?
...Does your prospective spouse display empathy?
...When you and your spouse-to-be are together, are they reaching out and touching you a lot?
...Does your spouse praise you a lot?
...Have you figured out what you expect in a marriage, and has your spouse fully agree to try and make that happen for you?
...I would say an answer of "no" to any of the above means you ought to reconsider.