Wow! This is a great news,I am happy for you sister, may God perfect it in Jesus name.

(1) first, my advice to my sister is 'be ready to marry'. There is one thing that makes him to love you so much, please try to know that thing and keep it up. Men normally likes to be respected,when you respect him he will love you more. feminism does not work in marriage though you have the right to be treated equal which I advocate for but this is the reality.
Nobody likes a boring life, try as much as possible to be a light in your home, make him happy he will replicate same. Lastly support him prayerfully.
(2) as a sister, I would miss you, I will give you my best wishes. God bless you as you embark in this fruitful journey in Jesus mighty name. Amen.
Congratulations in advance. The importance of this blessing alone surpasses any reward you can give, let's celebrate