Is it morally okay for a 22 year old to be with a 18 year old?

I (22M) recently (November 25th) started dating my partner (18F). She turned 18 December 1st, and I will be turning 23 in early March. We met through her brother whom i went to middle school with. Despite the age difference being relatively small, many people in my life have expressed disapproval and concern about our relationship, since she is to the younger side. They believe the age gap is inappropriate, even though both of us are consenting adults and entered the relationship willingly. It has always been fully legal according to the Swedish laws, though I can’t help but think it’s morally wrong.

**TL;DR;** : I (22M) am dating my partner (18F). Although the relationship is legal and consensual, many people disapprove due to our ages, and I’m questioning whether the age gap is morally wrong.