Is a young man proposing marriage obligated to inform his fiancée or her parents about a curvature in his penis resulting from circumcision, and what should he do regarding his fear of this affecting his marriage?

If the curvature of the penis affects intercourse and prevents the woman from fully enjoying it, then she must be informed of this; because the ability to engage in intercourse is a condition for competency. However, if the curvature does not affect intercourse, or if its effect is not significant, then there is no need to inform her.