The 'Someone Like You' hitmaker - who documented painful break-ups in her multi-million selling albums '19' and '21' - admitted not having a special someone to share her success with has made her "miserable" at times.
She said: "Not having someone to share all this with made me miserable at times, to be honest. I wanted nothing more than to be in love and be loved back. That was until I remembered I was sharing it with millions and millions and millions of people!
"I haven't been ready to be in love again since summer 2009 ... until now. And I hadn't met anyone along the way who's changed that."
The 23-year-old singer explained the success of '21' became a "constant reminder" of her lost love, and just made her feel "bitter" and "sad" about the relationship.
Adele added in an online chat with Billboard: "I was bitter and sad. Obviously it was intensified because the record exploded, and it was a constant reminder of him that I couldn't avoid. But I hadn't met anyone else.
"I missed him because I didn't like feeling lonely and so I just kept going over and over the mistakes and resenting him and regretting our time together."
