What most naturally follows?

How to handle doubts about your whirlwind romance and marriage
Accept some insecurities are normal.
Insecurities are a normal part of any relationship and may be more intense if your relationship unfolded quickly. Things like attraction to other people, worrying about getting along with family members, and feeling like you're settling may be normal.
Try to accept insecurities as they come and remind yourself every romantic relationship comes with uncertainty. Doubt is to be expected in a relationship.