While I agree that it is always best to approach ANY relationship (romantic or otherwise) with discernment, I’m a little concerned about the “track record” portion of your post.
My best friend (who is not Catholic) is in her fourth marriage. On the outside, this would seem to be one of those scenarios where one might think she is “disturbed” or “manipulative”. But the truth of the matter is, none of the previous three divorces were either a) her “fault” or b) anything most people would have advised against.
I think that blanket statements are, at the very least, not helpful in these types of discussions, and at the worst, could be hurtful.
Also, the OP mentioned that he really did not want to get married. So I think this is a question he’s just posting out of curiosity.