I believe there's a love of your life, but you won't know who that is until you die. I think it's my husband, but what happens if we divorce and I find someone who I fall in love with in a different way than I am now?
You said you were the one who went away and you're ready to come back, so do that. Tell your love and they'll either accept you or not. There's no real advice anyone can give you. We don't know the circumstances of your relationship or really anything about you two. All we can say is give it your best shot and if it works out, great, if it doesn't, that sucks but it's life.
I'm not saying that to be cruel, it's just the reality of things.