The 'Glee' star, who was left devastated when he boyfriend and co-star was found dead in July 2013 after a drug and alcohol overdose, claims the pair had discussed started a family together.
She told the new edition of UK's Glamour magazine: ''We talked about a lot of things. We talked about children and what we would look like when we grew old and who would be fat and how we would stay thin.
''We talked about where we wanted to go and what we wanted to do. We were done. We were it. When you're at that place in your life with someone, you talk about everything. But today I feel like I was given the best part of Cory and I'm thankful for that.''
The 27-year-old actress - who dated Cory, 31, for two years after meeting on set of the teen drama - admits she finally feels ''a bit more back together'' after losing her beau and she believes he would like to see her fall in love again.
She said: ''It's so important to make sure I'm 100 per cent OK before I get into a relationship.
''People have to understand that I can't be alone forever. Cory wouldn't want that.''
The 'Cannonball' hitmaker will release her debut album, 'Louder' on March 17, and one of the tracks, 'If You Say So', was dedicated to Cory as it represents the last words he ever said to her.