Yes, of course he can.
While tradition dictates the father of the bride walks them down the aisle, the fact is not everybody has a father while others simply do not have that sort of relationship with theirs.
Walking the bride down the aisle signifies giving the bride away and that can be done by any male the bride feels close to, including her own son or step-father or brother or even a very close friend!
In a recent Real Wedding, we told the tale of Perth bride Michelle Cavallaro who she asked her son Jye to give her away.
Also, many modern brides ask their mums to walk them down the aisle, especially in circumstances where they have been raised solely by their mothers or their fathers have passed away. It’s truly touching to watch.
At the end of the day, that moment when you walk down the aisle is the last one of your single life and the person leading you should be someone who is very special and deserves the priviledge of being with you in that moment, as well as the priviledge of “giving you away”.
Only you can decide who that person should be and age, sex or relationship shouldn’t matter!