And the beautiful thing is that you're never really alone in this world. You're never alone with the good and bad events taking place in your life, you're never alone in your own head, you're not even left alone with you memories, be it bad or good ones. There's always two others with you who always experience everything with you; going through life with you and even dwelling in memories with you, and those are the two angels on your shoulders. Oftentimes in life we dwell on beautiful memories and then kinda start feeling sad because things have changed. Some of us might even feel alone because we think that the other person doesn't remember it the way we do. But guess what? The other person also has two angels on his/her shoulders, and those two angels; they remember too. And all of a sudden, it's 4 angels remembering, plus you and of course: plus ALLAH.
And who knows? If that person already went to the next world he/she might still look back sometimes. Maybe those beautiful memories between the two of you will be the topic in the conversations between ALLAH and that person.