Love when you're ready, not when you're lonely. It's not fair to the other person, or to you, when you create an attachment to someone purely out of loneliness. It's most likely going to end badly/quickly/painfully. People need to remember this.
It will hurt. It will take time. It will require willpower. You will need to make healthy decisions. It requires sacrifice. You will need to push your body to its max. There will be temptation. But, I promise you, when you reach your goal, it's worth it.