questions about engagement

[terinsuke]

ooh wow.. jumping into the deep end.. so! ive been with my lovely spike for nearly three years now and in my gut i know he?s who i want to spend the rest of my life with. and im not sure how i should go around it.. should i just propose? or wait for him? or just mutually agree to it? spike?s expressed interest in marriage with his previous partner but it was never brought up with us, and i just want to show him that i love him so much and that he?s always going to be the one for me:(( if you are married/engaged to your s/o, how did the engagement unfold? i just really wanna get this right for him..