I will never regret you, or say I wish I'd never met you, because once upon a time, you were exactly what I needed. This is so true. everyone comes through your life for a reason, whether they stay or leave.
The person might not be who you thought they were; might have changed for the worse; but in the memories, they will always be the person you loved. it's ok to cherish those memories. You dont have to allow that person in your life now.